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TacticalApp
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Merge branch 'deployment' of pedrosaclout/TacticalApp into master

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master
acastro 5 years ago committed by Gitea
parent 930d46f7cc f7639c06dd
commit 502c82833d
2052 changed files with 86 additions and 364348 deletions
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7
.gitignore vendored
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env/
env/*
venv/
venv/*
.idea/
*.pyc
__pycache__/
__pycache__/*

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README.md
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# Run
## in Development
`export FLASK_APP=run.py`
`export FLASK_ENV=development`
`flask run`
**Using gunicorn:**
`gunicorn -w 4 -b 127.0.0.1:5000 app:app`
* `-w` workers
* `-b` bind to address / unix socker
**And gunicorn with using unix sock:** (this how it should run in production)
`gunicorn --workers 4 --bind unix:app.sock -m 007 app:app `
## in Production with gunicorn and unix sockets
Based on https://medium.com/faun/deploy-flask-app-with-nginx-using-gunicorn-7fda4f50066a
### systemd service file
Add to /etc/systemd/system/watermarks.service
```
[Unit]
After=network.target
[Service]
User=psc
Group=www-data
WorkingDirectory=/var/www/TacticalApp
Environment="PATH=/var/www/TacticalApp/venv/bin"
ExecStart=/var/www/TacticalApp/venv/bin/gunicorn --workers 4 --bind unix:app.sock -m 007 app:app
[Install]
WantedBy=multi-user.target
```
## enable & start service file
`systemctl enable watermarks.service`
`systemctl start watermarks.service`
It is also a good idea to check the status of the service
`systemctl status watermarks.service`
## Nginx config
```
location / {
include proxy_params;
# it will pass the requests to the socket
proxy_pass http://unix:/var/www/TacticalApp/app.sock;
# @andre: unsure whether we need a proxy_redirect as well
# if so, it might be somthing like
# http://unix:/var/www/TacticalApp/app.sock $scheme://$host:80/;
}
```
## debug.
It might be helpful to enable gunicorn logging, while in development, to check what is going on,
by replacing in watermarks.service, the `ExecStart=` value with:
`ExecStart=/var/www/TacticalApp/venv/bin/gunicorn --log-level debug --error-logfile /var/www/TacticalApp/app.log --workers 4 --bind unix:app.sock -m 007 app:app`
And reloading the services
`systemctl daemon-reload`
`systemctl restart watermarks.service`
and the start following app.log:
`tail -f /var/www/TacticalApp/app.log`
But in the long run logging should be disabled

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requirements.txt
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alembic
click
console-log
dataset
Flask
Flask-SQLAlchemy
gevent
gevent-websocket
greenlet
gunicorn
itsdangerous
Jinja2
Mako
MarkupSafe
python-dateutil
python-editor
setuptools
six
SQLAlchemy
Werkzeug
wsgigzip
Flask==1.0.2
gunicorn==20.0.4
Jinja2==2.11.1
dataset==1.3.1

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venv/bin/activate
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# This file must be used with "source bin/activate" *from bash*
# you cannot run it directly
deactivate () {
# reset old environment variables
if [ -n "${_OLD_VIRTUAL_PATH:-}" ] ; then
PATH="${_OLD_VIRTUAL_PATH:-}"
export PATH
unset _OLD_VIRTUAL_PATH
fi
if [ -n "${_OLD_VIRTUAL_PYTHONHOME:-}" ] ; then
PYTHONHOME="${_OLD_VIRTUAL_PYTHONHOME:-}"
export PYTHONHOME
unset _OLD_VIRTUAL_PYTHONHOME
fi
# This should detect bash and zsh, which have a hash command that must
# be called to get it to forget past commands. Without forgetting
# past commands the $PATH changes we made may not be respected
if [ -n "${BASH:-}" -o -n "${ZSH_VERSION:-}" ] ; then
hash -r
fi
if [ -n "${_OLD_VIRTUAL_PS1:-}" ] ; then
PS1="${_OLD_VIRTUAL_PS1:-}"
export PS1
unset _OLD_VIRTUAL_PS1
fi
unset VIRTUAL_ENV
if [ ! "$1" = "nondestructive" ] ; then
# Self destruct!
unset -f deactivate
fi
}
# unset irrelevant variables
deactivate nondestructive
VIRTUAL_ENV="/var/www/TacticalApp/venv"
export VIRTUAL_ENV
_OLD_VIRTUAL_PATH="$PATH"
PATH="$VIRTUAL_ENV/bin:$PATH"
export PATH
# unset PYTHONHOME if set
# this will fail if PYTHONHOME is set to the empty string (which is bad anyway)
# could use `if (set -u; : $PYTHONHOME) ;` in bash
if [ -n "${PYTHONHOME:-}" ] ; then
_OLD_VIRTUAL_PYTHONHOME="${PYTHONHOME:-}"
unset PYTHONHOME
fi
if [ -z "${VIRTUAL_ENV_DISABLE_PROMPT:-}" ] ; then
_OLD_VIRTUAL_PS1="${PS1:-}"
if [ "x(venv) " != x ] ; then
PS1="(venv) ${PS1:-}"
else
if [ "`basename \"$VIRTUAL_ENV\"`" = "__" ] ; then
# special case for Aspen magic directories
# see http://www.zetadev.com/software/aspen/
PS1="[`basename \`dirname \"$VIRTUAL_ENV\"\``] $PS1"
else
PS1="(`basename \"$VIRTUAL_ENV\"`)$PS1"
fi
fi
export PS1
fi
# This should detect bash and zsh, which have a hash command that must
# be called to get it to forget past commands. Without forgetting
# past commands the $PATH changes we made may not be respected
if [ -n "${BASH:-}" -o -n "${ZSH_VERSION:-}" ] ; then
hash -r
fi

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venv/bin/activate.csh
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# This file must be used with "source bin/activate.csh" *from csh*.
# You cannot run it directly.
# Created by Davide Di Blasi <davidedb@gmail.com>.
# Ported to Python 3.3 venv by Andrew Svetlov <andrew.svetlov@gmail.com>
alias deactivate 'test $?_OLD_VIRTUAL_PATH != 0 && setenv PATH "$_OLD_VIRTUAL_PATH" && unset _OLD_VIRTUAL_PATH; rehash; test $?_OLD_VIRTUAL_PROMPT != 0 && set prompt="$_OLD_VIRTUAL_PROMPT" && unset _OLD_VIRTUAL_PROMPT; unsetenv VIRTUAL_ENV; test "\!:*" != "nondestructive" && unalias deactivate'
# Unset irrelevant variables.
deactivate nondestructive
setenv VIRTUAL_ENV "/var/www/TacticalApp/venv"
set _OLD_VIRTUAL_PATH="$PATH"
setenv PATH "$VIRTUAL_ENV/bin:$PATH"
set _OLD_VIRTUAL_PROMPT="$prompt"
if (! "$?VIRTUAL_ENV_DISABLE_PROMPT") then
if ("venv" != "") then
set env_name = "venv"
else
if (`basename "VIRTUAL_ENV"` == "__") then
# special case for Aspen magic directories
# see http://www.zetadev.com/software/aspen/
set env_name = `basename \`dirname "$VIRTUAL_ENV"\``
else
set env_name = `basename "$VIRTUAL_ENV"`
endif
endif
set prompt = "[$env_name] $prompt"
unset env_name
endif
alias pydoc python -m pydoc
rehash

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venv/bin/activate.fish
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# This file must be used with ". bin/activate.fish" *from fish* (http://fishshell.org)
# you cannot run it directly
function deactivate -d "Exit virtualenv and return to normal shell environment"
# reset old environment variables
if test -n "$_OLD_VIRTUAL_PATH"
set -gx PATH $_OLD_VIRTUAL_PATH
set -e _OLD_VIRTUAL_PATH
end
if test -n "$_OLD_VIRTUAL_PYTHONHOME"
set -gx PYTHONHOME $_OLD_VIRTUAL_PYTHONHOME
set -e _OLD_VIRTUAL_PYTHONHOME
end
if test -n "$_OLD_FISH_PROMPT_OVERRIDE"
functions -e fish_prompt
set -e _OLD_FISH_PROMPT_OVERRIDE
functions -c _old_fish_prompt fish_prompt
functions -e _old_fish_prompt
end
set -e VIRTUAL_ENV
if test "$argv[1]" != "nondestructive"
# Self destruct!
functions -e deactivate
end
end
# unset irrelevant variables
deactivate nondestructive
set -gx VIRTUAL_ENV "/var/www/TacticalApp/venv"
set -gx _OLD_VIRTUAL_PATH $PATH
set -gx PATH "$VIRTUAL_ENV/bin" $PATH
# unset PYTHONHOME if set
if set -q PYTHONHOME
set -gx _OLD_VIRTUAL_PYTHONHOME $PYTHONHOME
set -e PYTHONHOME
end
if test -z "$VIRTUAL_ENV_DISABLE_PROMPT"
# fish uses a function instead of an env var to generate the prompt.
# save the current fish_prompt function as the function _old_fish_prompt
functions -c fish_prompt _old_fish_prompt
# with the original prompt function renamed, we can override with our own.
function fish_prompt
# Save the return status of the last command
set -l old_status $status
# Prompt override?
if test -n "(venv) "
printf "%s%s" "(venv) " (set_color normal)
else
# ...Otherwise, prepend env
set -l _checkbase (basename "$VIRTUAL_ENV")
if test $_checkbase = "__"
# special case for Aspen magic directories
# see http://www.zetadev.com/software/aspen/
printf "%s[%s]%s " (set_color -b blue white) (basename (dirname "$VIRTUAL_ENV")) (set_color normal)
else
printf "%s(%s)%s" (set_color -b blue white) (basename "$VIRTUAL_ENV") (set_color normal)
end
end
# Restore the return status of the previous command.
echo "exit $old_status" | .
_old_fish_prompt
end
set -gx _OLD_FISH_PROMPT_OVERRIDE "$VIRTUAL_ENV"
end

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venv/bin/alembic
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#!/var/www/TacticalApp/venv/bin/python3
# -*- coding: utf-8 -*-
import re
import sys
from alembic.config import main
if __name__ == '__main__':
sys.argv[0] = re.sub(r'(-script\.pyw?|\.exe)?$', '', sys.argv[0])
sys.exit(main())

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venv/bin/easy_install
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#!/var/www/TacticalApp/venv/bin/python3
# -*- coding: utf-8 -*-
import re
import sys
from setuptools.command.easy_install import main
if __name__ == '__main__':
sys.argv[0] = re.sub(r'(-script\.pyw?|\.exe)?$', '', sys.argv[0])
sys.exit(main())

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venv/bin/easy_install-3.7
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#!/var/www/TacticalApp/venv/bin/python3
# -*- coding: utf-8 -*-
import re
import sys
from setuptools.command.easy_install import main
if __name__ == '__main__':
sys.argv[0] = re.sub(r'(-script\.pyw?|\.exe)?$', '', sys.argv[0])
sys.exit(main())

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venv/bin/flask
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#!/var/www/TacticalApp/venv/bin/python3
# -*- coding: utf-8 -*-
import re
import sys
from flask.cli import main
if __name__ == '__main__':
sys.argv[0] = re.sub(r'(-script\.pyw?|\.exe)?$', '', sys.argv[0])
sys.exit(main())

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venv/bin/gunicorn
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#!/var/www/TacticalApp/venv/bin/python3
# -*- coding: utf-8 -*-
import re
import sys
from gunicorn.app.wsgiapp import run
if __name__ == '__main__':
sys.argv[0] = re.sub(r'(-script\.pyw?|\.exe)?$', '', sys.argv[0])
sys.exit(run())

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venv/bin/mako-render
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#!/var/www/TacticalApp/venv/bin/python3
# -*- coding: utf-8 -*-
import re
import sys
from mako.cmd import cmdline
if __name__ == '__main__':
sys.argv[0] = re.sub(r'(-script\.pyw?|\.exe)?$', '', sys.argv[0])
sys.exit(cmdline())

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venv/bin/pip
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#!/var/www/TacticalApp/venv/bin/python3
# -*- coding: utf-8 -*-
import re
import sys
from pip._internal import main
if __name__ == '__main__':
sys.argv[0] = re.sub(r'(-script\.pyw?|\.exe)?$', '', sys.argv[0])
sys.exit(main())

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venv/bin/pip3
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#!/var/www/TacticalApp/venv/bin/python3
# -*- coding: utf-8 -*-
import re
import sys
from pip._internal import main
if __name__ == '__main__':
sys.argv[0] = re.sub(r'(-script\.pyw?|\.exe)?$', '', sys.argv[0])
sys.exit(main())

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venv/bin/pip3.7
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#!/var/www/TacticalApp/venv/bin/python3
# -*- coding: utf-8 -*-
import re
import sys
from pip._internal import main
if __name__ == '__main__':
sys.argv[0] = re.sub(r'(-script\.pyw?|\.exe)?$', '', sys.argv[0])
sys.exit(main())

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venv/bin/python
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python3

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venv/bin/python3
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/usr/bin/python3

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venv/include/site/python3.7/greenlet/greenlet.h
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/* vim:set noet ts=8 sw=8 : */
/* Greenlet object interface */
#ifndef Py_GREENLETOBJECT_H
#define Py_GREENLETOBJECT_H
#include <Python.h>
#ifdef __cplusplus
extern "C" {
#endif
#define GREENLET_VERSION "0.4.15"
#if PY_VERSION_HEX >= 0x030700A3
# define GREENLET_USE_EXC_INFO
#endif
typedef struct _greenlet {
PyObject_HEAD
char* stack_start;
char* stack_stop;
char* stack_copy;
intptr_t stack_saved;
struct _greenlet* stack_prev;
struct _greenlet* parent;
PyObject* run_info;
struct _frame* top_frame;
int recursion_depth;
PyObject* weakreflist;
#ifdef GREENLET_USE_EXC_INFO
_PyErr_StackItem* exc_info;
_PyErr_StackItem exc_state;
#else
PyObject* exc_type;
PyObject* exc_value;
PyObject* exc_traceback;
#endif
PyObject* dict;
} PyGreenlet;
#define PyGreenlet_Check(op) PyObject_TypeCheck(op, &PyGreenlet_Type)
#define PyGreenlet_MAIN(op) (((PyGreenlet*)(op))->stack_stop == (char*) -1)
#define PyGreenlet_STARTED(op) (((PyGreenlet*)(op))->stack_stop != NULL)
#define PyGreenlet_ACTIVE(op) (((PyGreenlet*)(op))->stack_start != NULL)
#define PyGreenlet_GET_PARENT(op) (((PyGreenlet*)(op))->parent)
#if (PY_MAJOR_VERSION == 2 && PY_MINOR_VERSION >= 7) || (PY_MAJOR_VERSION == 3 && PY_MINOR_VERSION >= 1) || PY_MAJOR_VERSION > 3
#define GREENLET_USE_PYCAPSULE
#endif
/* C API functions */
/* Total number of symbols that are exported */
#define PyGreenlet_API_pointers 8
#define PyGreenlet_Type_NUM 0
#define PyExc_GreenletError_NUM 1
#define PyExc_GreenletExit_NUM 2
#define PyGreenlet_New_NUM 3
#define PyGreenlet_GetCurrent_NUM 4
#define PyGreenlet_Throw_NUM 5
#define PyGreenlet_Switch_NUM 6
#define PyGreenlet_SetParent_NUM 7
#ifndef GREENLET_MODULE
/* This section is used by modules that uses the greenlet C API */
static void **_PyGreenlet_API = NULL;
#define PyGreenlet_Type (*(PyTypeObject *) _PyGreenlet_API[PyGreenlet_Type_NUM])
#define PyExc_GreenletError \
((PyObject *) _PyGreenlet_API[PyExc_GreenletError_NUM])
#define PyExc_GreenletExit \
((PyObject *) _PyGreenlet_API[PyExc_GreenletExit_NUM])
/*
* PyGreenlet_New(PyObject *args)
*
* greenlet.greenlet(run, parent=None)
*/
#define PyGreenlet_New \
(* (PyGreenlet * (*)(PyObject *run, PyGreenlet *parent)) \
_PyGreenlet_API[PyGreenlet_New_NUM])
/*
* PyGreenlet_GetCurrent(void)
*
* greenlet.getcurrent()
*/
#define PyGreenlet_GetCurrent \
(* (PyGreenlet * (*)(void)) _PyGreenlet_API[PyGreenlet_GetCurrent_NUM])
/*
* PyGreenlet_Throw(
* PyGreenlet *greenlet,
* PyObject *typ,
* PyObject *val,
* PyObject *tb)
*
* g.throw(...)
*/
#define PyGreenlet_Throw \
(* (PyObject * (*) \
(PyGreenlet *self, PyObject *typ, PyObject *val, PyObject *tb)) \
_PyGreenlet_API[PyGreenlet_Throw_NUM])
/*
* PyGreenlet_Switch(PyGreenlet *greenlet, PyObject *args)
*
* g.switch(*args, **kwargs)
*/
#define PyGreenlet_Switch \
(* (PyObject * (*)(PyGreenlet *greenlet, PyObject *args, PyObject *kwargs)) \
_PyGreenlet_API[PyGreenlet_Switch_NUM])
/*
* PyGreenlet_SetParent(PyObject *greenlet, PyObject *new_parent)
*
* g.parent = new_parent
*/
#define PyGreenlet_SetParent \
(* (int (*)(PyGreenlet *greenlet, PyGreenlet *nparent)) \
_PyGreenlet_API[PyGreenlet_SetParent_NUM])
/* Macro that imports greenlet and initializes C API */
#ifdef GREENLET_USE_PYCAPSULE
#define PyGreenlet_Import() \
{ \
_PyGreenlet_API = (void**)PyCapsule_Import("greenlet._C_API", 0); \
}
#else
#define PyGreenlet_Import() \
{ \
PyObject *module = PyImport_ImportModule("greenlet"); \
if (module != NULL) { \
PyObject *c_api_object = PyObject_GetAttrString( \
module, "_C_API"); \
if (c_api_object != NULL && PyCObject_Check(c_api_object)) { \
_PyGreenlet_API = \
(void **) PyCObject_AsVoidPtr(c_api_object); \
Py_DECREF(c_api_object); \
} \
Py_DECREF(module); \
} \
}
#endif
#endif /* GREENLET_MODULE */
#ifdef __cplusplus
}
#endif
#endif /* !Py_GREENLETOBJECT_H */

1
venv/lib/python3.7/site-packages/Flask-1.1.1.dist-info/INSTALLER
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pip

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venv/lib/python3.7/site-packages/Flask-1.1.1.dist-info/LICENSE.rst
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Copyright 2010 Pallets
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
met:
1. Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
3. Neither the name of the copyright holder nor the names of its
contributors may be used to endorse or promote products derived from
this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

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venv/lib/python3.7/site-packages/Flask-1.1.1.dist-info/METADATA
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Metadata-Version: 2.1
Name: Flask
Version: 1.1.1
Summary: A simple framework for building complex web applications.
Home-page: https://palletsprojects.com/p/flask/
Author: Armin Ronacher
Author-email: armin.ronacher@active-4.com
Maintainer: Pallets
Maintainer-email: contact@palletsprojects.com
License: BSD-3-Clause
Project-URL: Documentation, https://flask.palletsprojects.com/
Project-URL: Code, https://github.com/pallets/flask
Project-URL: Issue tracker, https://github.com/pallets/flask/issues
Platform: UNKNOWN
Classifier: Development Status :: 5 - Production/Stable
Classifier: Environment :: Web Environment
Classifier: Framework :: Flask
Classifier: Intended Audience :: Developers
Classifier: License :: OSI Approved :: BSD License
Classifier: Operating System :: OS Independent
Classifier: Programming Language :: Python
Classifier: Programming Language :: Python :: 2
Classifier: Programming Language :: Python :: 2.7
Classifier: Programming Language :: Python :: 3
Classifier: Programming Language :: Python :: 3.5
Classifier: Programming Language :: Python :: 3.6
Classifier: Programming Language :: Python :: 3.7
Classifier: Topic :: Internet :: WWW/HTTP :: Dynamic Content
Classifier: Topic :: Internet :: WWW/HTTP :: WSGI :: Application
Classifier: Topic :: Software Development :: Libraries :: Application Frameworks
Classifier: Topic :: Software Development :: Libraries :: Python Modules
Requires-Python: >=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*
Requires-Dist: Werkzeug (>=0.15)
Requires-Dist: Jinja2 (>=2.10.1)
Requires-Dist: itsdangerous (>=0.24)
Requires-Dist: click (>=5.1)
Provides-Extra: dev
Requires-Dist: pytest ; extra == 'dev'
Requires-Dist: coverage ; extra == 'dev'
Requires-Dist: tox ; extra == 'dev'
Requires-Dist: sphinx ; extra == 'dev'
Requires-Dist: pallets-sphinx-themes ; extra == 'dev'
Requires-Dist: sphinxcontrib-log-cabinet ; extra == 'dev'
Requires-Dist: sphinx-issues ; extra == 'dev'
Provides-Extra: docs
Requires-Dist: sphinx ; extra == 'docs'
Requires-Dist: pallets-sphinx-themes ; extra == 'docs'
Requires-Dist: sphinxcontrib-log-cabinet ; extra == 'docs'
Requires-Dist: sphinx-issues ; extra == 'docs'
Provides-Extra: dotenv
Requires-Dist: python-dotenv ; extra == 'dotenv'
Flask
=====
Flask is a lightweight `WSGI`_ web application framework. It is designed
to make getting started quick and easy, with the ability to scale up to
complex applications. It began as a simple wrapper around `Werkzeug`_
and `Jinja`_ and has become one of the most popular Python web
application frameworks.
Flask offers suggestions, but doesn't enforce any dependencies or
project layout. It is up to the developer to choose the tools and
libraries they want to use. There are many extensions provided by the
community that make adding new functionality easy.
Installing
----------
Install and update using `pip`_:
.. code-block:: text
pip install -U Flask
A Simple Example
----------------
.. code-block:: python
from flask import Flask
app = Flask(__name__)
@app.route("/")
def hello():
return "Hello, World!"
.. code-block:: text
$ env FLASK_APP=hello.py flask run
* Serving Flask app "hello"
* Running on http://127.0.0.1:5000/ (Press CTRL+C to quit)
Contributing
------------
For guidance on setting up a development environment and how to make a
contribution to Flask, see the `contributing guidelines`_.
.. _contributing guidelines: https://github.com/pallets/flask/blob/master/CONTRIBUTING.rst
Donate
------
The Pallets organization develops and supports Flask and the libraries
it uses. In order to grow the community of contributors and users, and
allow the maintainers to devote more time to the projects, `please
donate today`_.
.. _please donate today: https://psfmember.org/civicrm/contribute/transact?reset=1&id=20
Links
-----
* Website: https://palletsprojects.com/p/flask/
* Documentation: https://flask.palletsprojects.com/
* Releases: https://pypi.org/project/Flask/
* Code: https://github.com/pallets/flask
* Issue tracker: https://github.com/pallets/flask/issues
* Test status: https://dev.azure.com/pallets/flask/_build
* Official chat: https://discord.gg/t6rrQZH
.. _WSGI: https://wsgi.readthedocs.io
.. _Werkzeug: https://www.palletsprojects.com/p/werkzeug/
.. _Jinja: https://www.palletsprojects.com/p/jinja/
.. _pip: https://pip.pypa.io/en/stable/quickstart/

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Copyright 2010 Pallets
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
met:
1. Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
3. Neither the name of the copyright holder nor the names of its
contributors may be used to endorse or promote products derived from
this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

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Metadata-Version: 2.1
Name: Flask-SQLAlchemy
Version: 2.4.1
Summary: Adds SQLAlchemy support to your Flask application.
Home-page: https://github.com/pallets/flask-sqlalchemy
Author: Armin Ronacher
Author-email: armin.ronacher@active-4.com
Maintainer: Pallets
Maintainer-email: contact@palletsprojects.com
License: BSD-3-Clause
Project-URL: Documentation, https://flask-sqlalchemy.palletsprojects.com/
Project-URL: Code, https://github.com/pallets/flask-sqlalchemy
Project-URL: Issue tracker, https://github.com/pallets/flask-sqlalchemy/issues
Platform: UNKNOWN
Classifier: Development Status :: 5 - Production/Stable
Classifier: Environment :: Web Environment
Classifier: Intended Audience :: Developers
Classifier: License :: OSI Approved :: BSD License
Classifier: Operating System :: OS Independent
Classifier: Programming Language :: Python
Classifier: Programming Language :: Python :: 2
Classifier: Programming Language :: Python :: 2.7
Classifier: Programming Language :: Python :: 3
Classifier: Programming Language :: Python :: 3.4
Classifier: Programming Language :: Python :: 3.5
Classifier: Programming Language :: Python :: 3.6
Classifier: Programming Language :: Python :: 3.7
Classifier: Programming Language :: Python :: Implementation :: CPython
Classifier: Programming Language :: Python :: Implementation :: PyPy
Classifier: Topic :: Internet :: WWW/HTTP :: Dynamic Content
Classifier: Topic :: Software Development :: Libraries :: Python Modules
Requires-Python: >= 2.7, != 3.0.*, != 3.1.*, != 3.2.*, != 3.3.*
Requires-Dist: Flask (>=0.10)
Requires-Dist: SQLAlchemy (>=0.8.0)
Flask-SQLAlchemy
================
Flask-SQLAlchemy is an extension for `Flask`_ that adds support for
`SQLAlchemy`_ to your application. It aims to simplify using SQLAlchemy
with Flask by providing useful defaults and extra helpers that make it
easier to accomplish common tasks.
Installing
----------
Install and update using `pip`_:
.. code-block:: text
$ pip install -U Flask-SQLAlchemy
A Simple Example
----------------
.. code-block:: python
from flask import Flask
from flask_sqlalchemy import SQLAlchemy
app = Flask(__name__)
app.config["SQLALCHEMY_DATABASE_URI"] = "sqlite:///example.sqlite"
db = SQLAlchemy(app)
class User(db.Model):
id = db.Column(db.Integer, primary_key=True)
username = db.Column(db.String, unique=True, nullable=False)
email = db.Column(db.String, unique=True, nullable=False)
db.session.add(User(name="Flask", email="example@example.com"))
db.session.commit()
users = User.query.all()
Links
-----
- Documentation: https://flask-sqlalchemy.palletsprojects.com/
- Releases: https://pypi.org/project/Flask-SQLAlchemy/
- Code: https://github.com/pallets/flask-sqlalchemy
- Issue tracker: https://github.com/pallets/flask-sqlalchemy/issues
- Test status: https://travis-ci.org/pallets/flask-sqlalchemy
- Test coverage: https://codecov.io/gh/pallets/flask-sqlalchemy
.. _Flask: https://palletsprojects.com/p/flask/
.. _SQLAlchemy: https://www.sqlalchemy.org
.. _pip: https://pip.pypa.io/en/stable/quickstart/

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Copyright 2007 Pallets
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
met:
1. Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
3. Neither the name of the copyright holder nor the names of its
contributors may be used to endorse or promote products derived from
this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

106
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Metadata-Version: 2.1
Name: Jinja2
Version: 2.11.1
Summary: A very fast and expressive template engine.
Home-page: https://palletsprojects.com/p/jinja/
Author: Armin Ronacher
Author-email: armin.ronacher@active-4.com
Maintainer: Pallets
Maintainer-email: contact@palletsprojects.com
License: BSD-3-Clause
Project-URL: Documentation, https://jinja.palletsprojects.com/
Project-URL: Code, https://github.com/pallets/jinja
Project-URL: Issue tracker, https://github.com/pallets/jinja/issues
Platform: UNKNOWN
Classifier: Development Status :: 5 - Production/Stable
Classifier: Environment :: Web Environment
Classifier: Intended Audience :: Developers
Classifier: License :: OSI Approved :: BSD License
Classifier: Operating System :: OS Independent
Classifier: Programming Language :: Python
Classifier: Programming Language :: Python :: 2
Classifier: Programming Language :: Python :: 2.7
Classifier: Programming Language :: Python :: 3
Classifier: Programming Language :: Python :: 3.5
Classifier: Programming Language :: Python :: 3.6
Classifier: Programming Language :: Python :: 3.7
Classifier: Programming Language :: Python :: 3.8
Classifier: Programming Language :: Python :: Implementation :: CPython
Classifier: Programming Language :: Python :: Implementation :: PyPy
Classifier: Topic :: Internet :: WWW/HTTP :: Dynamic Content
Classifier: Topic :: Software Development :: Libraries :: Python Modules
Classifier: Topic :: Text Processing :: Markup :: HTML
Requires-Python: >=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*
Description-Content-Type: text/x-rst
Requires-Dist: MarkupSafe (>=0.23)
Provides-Extra: i18n
Requires-Dist: Babel (>=0.8) ; extra == 'i18n'
Jinja
=====
Jinja is a fast, expressive, extensible templating engine. Special
placeholders in the template allow writing code similar to Python
syntax. Then the template is passed data to render the final document.
It includes:
- Template inheritance and inclusion.
- Define and import macros within templates.
- HTML templates can use autoescaping to prevent XSS from untrusted
user input.
- A sandboxed environment can safely render untrusted templates.
- AsyncIO support for generating templates and calling async
functions.
- I18N support with Babel.
- Templates are compiled to optimized Python code just-in-time and
cached, or can be compiled ahead-of-time.
- Exceptions point to the correct line in templates to make debugging
easier.
- Extensible filters, tests, functions, and even syntax.
Jinja's philosophy is that while application logic belongs in Python if
possible, it shouldn't make the template designer's job difficult by
restricting functionality too much.
Installing
----------
Install and update using `pip`_:
.. code-block:: text
$ pip install -U Jinja2
.. _pip: https://pip.pypa.io/en/stable/quickstart/
In A Nutshell
-------------
.. code-block:: jinja
{% extends "base.html" %}
{% block title %}Members{% endblock %}
{% block content %}
<ul>
{% for user in users %}
<li><a href="{{ user.url }}">{{ user.username }}</a></li>
{% endfor %}
</ul>
{% endblock %}
Links
-----
- Website: https://palletsprojects.com/p/jinja/
- Documentation: https://jinja.palletsprojects.com/
- Releases: https://pypi.org/project/Jinja2/
- Code: https://github.com/pallets/jinja
- Issue tracker: https://github.com/pallets/jinja/issues
- Test status: https://dev.azure.com/pallets/jinja/_build
- Official chat: https://discord.gg/t6rrQZH

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[babel.extractors]
jinja2 = jinja2.ext:babel_extract [i18n]

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Mako was created by Michael Bayer.
Major contributing authors include:
- Michael Bayer <mike_mp@zzzcomputing.com>
- Geoffrey T. Dairiki <dairiki@dairiki.org>
- Philip Jenvey <pjenvey@underboss.org>
- David Peckam
- Armin Ronacher
- Ben Bangert <ben@groovie.org>
- Ben Trofatter

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pip

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Copyright 2006-2020 the Mako authors and contributors <see AUTHORS file>.
Permission is hereby granted, free of charge, to any person obtaining a copy of
this software and associated documentation files (the "Software"), to deal in
the Software without restriction, including without limitation the rights to
use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
of the Software, and to permit persons to whom the Software is furnished to do
so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.

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Metadata-Version: 2.1
Name: Mako
Version: 1.1.2
Summary: A super-fast templating language that borrows the best ideas from the existing templating languages.
Home-page: https://www.makotemplates.org/
Author: Mike Bayer
Author-email: mike@zzzcomputing.com
License: MIT
Project-URL: Documentation, https://docs.makotemplates.org
Project-URL: Issue Tracker, https://github.com/sqlalchemy/mako
Keywords: templates
Platform: UNKNOWN
Classifier: Development Status :: 5 - Production/Stable
Classifier: License :: OSI Approved :: MIT License
Classifier: Environment :: Web Environment
Classifier: Intended Audience :: Developers
Classifier: Programming Language :: Python
Classifier: Programming Language :: Python :: 3
Classifier: Programming Language :: Python :: Implementation :: CPython
Classifier: Programming Language :: Python :: Implementation :: PyPy
Classifier: Topic :: Internet :: WWW/HTTP :: Dynamic Content
Requires-Python: >=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*
Requires-Dist: MarkupSafe (>=0.9.2)
Provides-Extra: babel
Requires-Dist: Babel ; extra == 'babel'
Provides-Extra: lingua
Requires-Dist: lingua ; extra == 'lingua'
=========================
Mako Templates for Python
=========================
Mako is a template library written in Python. It provides a familiar, non-XML
syntax which compiles into Python modules for maximum performance. Mako's
syntax and API borrows from the best ideas of many others, including Django
templates, Cheetah, Myghty, and Genshi. Conceptually, Mako is an embedded
Python (i.e. Python Server Page) language, which refines the familiar ideas
of componentized layout and inheritance to produce one of the most
straightforward and flexible models available, while also maintaining close
ties to Python calling and scoping semantics.
Nutshell
========
::
<%inherit file="base.html"/>
<%
rows = [[v for v in range(0,10)] for row in range(0,10)]
%>
<table>
% for row in rows:
${makerow(row)}
% endfor
</table>
<%def name="makerow(row)">
<tr>
% for name in row:
<td>${name}</td>\
% endfor
</tr>
</%def>
Philosophy
===========
Python is a great scripting language. Don't reinvent the wheel...your templates can handle it !
Documentation
==============
See documentation for Mako at https://docs.makotemplates.org/en/latest/
License
========
Mako is licensed under an MIT-style license (see LICENSE).
Other incorporated projects may be licensed under different licenses.
All licenses allow for non-commercial and commercial use.

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[python.templating.engines]
mako = mako.ext.turbogears:TGPlugin
[pygments.lexers]
mako = mako.ext.pygmentplugin:MakoLexer
html+mako = mako.ext.pygmentplugin:MakoHtmlLexer
xml+mako = mako.ext.pygmentplugin:MakoXmlLexer
js+mako = mako.ext.pygmentplugin:MakoJavascriptLexer
css+mako = mako.ext.pygmentplugin:MakoCssLexer
[babel.extractors]
mako = mako.ext.babelplugin:extract [babel]
[lingua.extractors]
mako = mako.ext.linguaplugin:LinguaMakoExtractor [lingua]
[console_scripts]
mako-render = mako.cmd:cmdline

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Copyright 2010 Pallets
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
met:
1. Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
3. Neither the name of the copyright holder nor the names of its
contributors may be used to endorse or promote products derived from
this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

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Metadata-Version: 2.1
Name: MarkupSafe
Version: 1.1.1
Summary: Safely add untrusted strings to HTML/XML markup.
Home-page: https://palletsprojects.com/p/markupsafe/
Author: Armin Ronacher
Author-email: armin.ronacher@active-4.com
Maintainer: The Pallets Team
Maintainer-email: contact@palletsprojects.com
License: BSD-3-Clause
Project-URL: Documentation, https://markupsafe.palletsprojects.com/
Project-URL: Code, https://github.com/pallets/markupsafe
Project-URL: Issue tracker, https://github.com/pallets/markupsafe/issues
Platform: UNKNOWN
Classifier: Development Status :: 5 - Production/Stable
Classifier: Environment :: Web Environment
Classifier: Intended Audience :: Developers
Classifier: License :: OSI Approved :: BSD License
Classifier: Operating System :: OS Independent
Classifier: Programming Language :: Python
Classifier: Programming Language :: Python :: 2
Classifier: Programming Language :: Python :: 2.7
Classifier: Programming Language :: Python :: 3
Classifier: Programming Language :: Python :: 3.4
Classifier: Programming Language :: Python :: 3.5
Classifier: Programming Language :: Python :: 3.6
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Classifier: Topic :: Internet :: WWW/HTTP :: Dynamic Content
Classifier: Topic :: Software Development :: Libraries :: Python Modules
Classifier: Topic :: Text Processing :: Markup :: HTML
Requires-Python: >=2.7,!=3.0.*,!=3.1.*,!=3.2.*,!=3.3.*
MarkupSafe
==========
MarkupSafe implements a text object that escapes characters so it is
safe to use in HTML and XML. Characters that have special meanings are
replaced so that they display as the actual characters. This mitigates
injection attacks, meaning untrusted user input can safely be displayed
on a page.
Installing
----------
Install and update using `pip`_:
.. code-block:: text
pip install -U MarkupSafe
.. _pip: https://pip.pypa.io/en/stable/quickstart/
Examples
--------
.. code-block:: pycon
>>> from markupsafe import Markup, escape
>>> # escape replaces special characters and wraps in Markup
>>> escape('<script>alert(document.cookie);</script>')
Markup(u'&lt;script&gt;alert(document.cookie);&lt;/script&gt;')
>>> # wrap in Markup to mark text "safe" and prevent escaping
>>> Markup('<strong>Hello</strong>')
Markup('<strong>hello</strong>')
>>> escape(Markup('<strong>Hello</strong>'))
Markup('<strong>hello</strong>')
>>> # Markup is a text subclass (str on Python 3, unicode on Python 2)
>>> # methods and operators escape their arguments
>>> template = Markup("Hello <em>%s</em>")
>>> template % '"World"'
Markup('Hello <em>&#34;World&#34;</em>')
Donate
------
The Pallets organization develops and supports MarkupSafe and other
libraries that use it. In order to grow the community of contributors
and users, and allow the maintainers to devote more time to the
projects, `please donate today`_.
.. _please donate today: https://palletsprojects.com/donate
Links
-----
* Website: https://palletsprojects.com/p/markupsafe/
* Documentation: https://markupsafe.palletsprojects.com/
* License: `BSD-3-Clause <https://github.com/pallets/markupsafe/blob/master/LICENSE.rst>`_
* Releases: https://pypi.org/project/MarkupSafe/
* Code: https://github.com/pallets/markupsafe
* Issue tracker: https://github.com/pallets/markupsafe/issues
* Test status:
* Linux, Mac: https://travis-ci.org/pallets/markupsafe
* Windows: https://ci.appveyor.com/project/pallets/markupsafe
* Test coverage: https://codecov.io/gh/pallets/markupsafe

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Copyright 2005-2020 SQLAlchemy authors and contributors <see AUTHORS file>.
Permission is hereby granted, free of charge, to any person obtaining a copy of
this software and associated documentation files (the "Software"), to deal in
the Software without restriction, including without limitation the rights to
use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
of the Software, and to permit persons to whom the Software is furnished to do
so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.

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Metadata-Version: 2.1
Name: SQLAlchemy
Version: 1.3.17
Summary: Database Abstraction Library
Home-page: http://www.sqlalchemy.org
Author: Mike Bayer
Author-email: mike_mp@zzzcomputing.com
License: MIT
Project-URL: Documentation, https://docs.sqlalchemy.org
Project-URL: Issue Tracker, https://github.com/sqlalchemy/sqlalchemy/
Platform: UNKNOWN
Classifier: Development Status :: 5 - Production/Stable
Classifier: Intended Audience :: Developers
Classifier: License :: OSI Approved :: MIT License
Classifier: Programming Language :: Python
Classifier: Programming Language :: Python :: 2
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Classifier: Programming Language :: Python :: Implementation :: CPython
Classifier: Programming Language :: Python :: Implementation :: PyPy
Classifier: Topic :: Database :: Front-Ends
Classifier: Operating System :: OS Independent
Requires-Python: >=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*
Provides-Extra: mssql
Requires-Dist: pyodbc ; extra == 'mssql'
Provides-Extra: mssql_pymssql
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Requires-Dist: pg8000 ; extra == 'postgresql_pg8000'
Provides-Extra: postgresql_psycopg2binary
Requires-Dist: psycopg2-binary ; extra == 'postgresql_psycopg2binary'
Provides-Extra: postgresql_psycopg2cffi
Requires-Dist: psycopg2cffi ; extra == 'postgresql_psycopg2cffi'
Provides-Extra: pymysql
Requires-Dist: pymysql ; extra == 'pymysql'
SQLAlchemy
==========
The Python SQL Toolkit and Object Relational Mapper
Introduction
-------------
SQLAlchemy is the Python SQL toolkit and Object Relational Mapper
that gives application developers the full power and
flexibility of SQL. SQLAlchemy provides a full suite
of well known enterprise-level persistence patterns,
designed for efficient and high-performing database
access, adapted into a simple and Pythonic domain
language.
Major SQLAlchemy features include:
* An industrial strength ORM, built
from the core on the identity map, unit of work,
and data mapper patterns. These patterns
allow transparent persistence of objects
using a declarative configuration system.
Domain models
can be constructed and manipulated naturally,
and changes are synchronized with the
current transaction automatically.
* A relationally-oriented query system, exposing
the full range of SQL's capabilities
explicitly, including joins, subqueries,
correlation, and most everything else,
in terms of the object model.
Writing queries with the ORM uses the same
techniques of relational composition you use
when writing SQL. While you can drop into
literal SQL at any time, it's virtually never
needed.
* A comprehensive and flexible system
of eager loading for related collections and objects.
Collections are cached within a session,
and can be loaded on individual access, all
at once using joins, or by query per collection
across the full result set.
* A Core SQL construction system and DBAPI
interaction layer. The SQLAlchemy Core is
separate from the ORM and is a full database
abstraction layer in its own right, and includes
an extensible Python-based SQL expression
language, schema metadata, connection pooling,
type coercion, and custom types.
* All primary and foreign key constraints are
assumed to be composite and natural. Surrogate
integer primary keys are of course still the
norm, but SQLAlchemy never assumes or hardcodes
to this model.
* Database introspection and generation. Database
schemas can be "reflected" in one step into
Python structures representing database metadata;
those same structures can then generate
CREATE statements right back out - all within
the Core, independent of the ORM.
SQLAlchemy's philosophy:
* SQL databases behave less and less like object
collections the more size and performance start to
matter; object collections behave less and less like
tables and rows the more abstraction starts to matter.
SQLAlchemy aims to accommodate both of these
principles.
* An ORM doesn't need to hide the "R". A relational
database provides rich, set-based functionality
that should be fully exposed. SQLAlchemy's
ORM provides an open-ended set of patterns
that allow a developer to construct a custom
mediation layer between a domain model and
a relational schema, turning the so-called
"object relational impedance" issue into
a distant memory.
* The developer, in all cases, makes all decisions
regarding the design, structure, and naming conventions
of both the object model as well as the relational
schema. SQLAlchemy only provides the means
to automate the execution of these decisions.
* With SQLAlchemy, there's no such thing as
"the ORM generated a bad query" - you
retain full control over the structure of
queries, including how joins are organized,
how subqueries and correlation is used, what
columns are requested. Everything SQLAlchemy
does is ultimately the result of a developer-
initiated decision.
* Don't use an ORM if the problem doesn't need one.
SQLAlchemy consists of a Core and separate ORM
component. The Core offers a full SQL expression
language that allows Pythonic construction
of SQL constructs that render directly to SQL
strings for a target database, returning
result sets that are essentially enhanced DBAPI
cursors.
* Transactions should be the norm. With SQLAlchemy's
ORM, nothing goes to permanent storage until
commit() is called. SQLAlchemy encourages applications
to create a consistent means of delineating
the start and end of a series of operations.
* Never render a literal value in a SQL statement.
Bound parameters are used to the greatest degree
possible, allowing query optimizers to cache
query plans effectively and making SQL injection
attacks a non-issue.
Documentation
-------------
Latest documentation is at:
http://www.sqlalchemy.org/docs/
Installation / Requirements
---------------------------
Full documentation for installation is at
`Installation <http://www.sqlalchemy.org/docs/intro.html#installation>`_.
Getting Help / Development / Bug reporting
------------------------------------------
Please refer to the `SQLAlchemy Community Guide <http://www.sqlalchemy.org/support.html>`_.
Code of Conduct
---------------
Above all, SQLAlchemy places great emphasis on polite, thoughtful, and
constructive communication between users and developers.
Please see our current Code of Conduct at
`Code of Conduct <http://www.sqlalchemy.org/codeofconduct.html>`_.
License
-------
SQLAlchemy is distributed under the `MIT license
<http://www.opensource.org/licenses/mit-license.php>`_.

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Copyright 2007 Pallets
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
met:
1. Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
3. Neither the name of the copyright holder nor the names of its
contributors may be used to endorse or promote products derived from
this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

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Metadata-Version: 2.1
Name: Werkzeug
Version: 1.0.0
Summary: The comprehensive WSGI web application library.
Home-page: https://palletsprojects.com/p/werkzeug/
Author: Armin Ronacher
Author-email: armin.ronacher@active-4.com
Maintainer: Pallets
Maintainer-email: contact@palletsprojects.com
License: BSD-3-Clause
Project-URL: Documentation, https://werkzeug.palletsprojects.com/
Project-URL: Code, https://github.com/pallets/werkzeug
Project-URL: Issue tracker, https://github.com/pallets/werkzeug/issues
Platform: UNKNOWN
Classifier: Development Status :: 5 - Production/Stable
Classifier: Environment :: Web Environment
Classifier: Intended Audience :: Developers
Classifier: License :: OSI Approved :: BSD License
Classifier: Operating System :: OS Independent
Classifier: Programming Language :: Python
Classifier: Programming Language :: Python :: 2
Classifier: Programming Language :: Python :: 2.7
Classifier: Programming Language :: Python :: 3
Classifier: Programming Language :: Python :: 3.5
Classifier: Programming Language :: Python :: 3.6
Classifier: Programming Language :: Python :: 3.7
Classifier: Programming Language :: Python :: 3.8
Classifier: Programming Language :: Python :: Implementation :: CPython
Classifier: Programming Language :: Python :: Implementation :: PyPy
Classifier: Topic :: Internet :: WWW/HTTP :: Dynamic Content
Classifier: Topic :: Internet :: WWW/HTTP :: WSGI
Classifier: Topic :: Internet :: WWW/HTTP :: WSGI :: Application
Classifier: Topic :: Internet :: WWW/HTTP :: WSGI :: Middleware
Classifier: Topic :: Software Development :: Libraries :: Application Frameworks
Classifier: Topic :: Software Development :: Libraries :: Python Modules
Requires-Python: >=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*
Description-Content-Type: text/x-rst
Provides-Extra: dev
Requires-Dist: pytest ; extra == 'dev'
Requires-Dist: coverage ; extra == 'dev'
Requires-Dist: tox ; extra == 'dev'
Requires-Dist: sphinx ; extra == 'dev'
Requires-Dist: pallets-sphinx-themes ; extra == 'dev'
Requires-Dist: sphinx-issues ; extra == 'dev'
Provides-Extra: watchdog
Requires-Dist: watchdog ; extra == 'watchdog'
Werkzeug
========
*werkzeug* German noun: "tool". Etymology: *werk* ("work"), *zeug* ("stuff")
Werkzeug is a comprehensive `WSGI`_ web application library. It began as
a simple collection of various utilities for WSGI applications and has
become one of the most advanced WSGI utility libraries.
It includes:
- An interactive debugger that allows inspecting stack traces and
source code in the browser with an interactive interpreter for any
frame in the stack.
- A full-featured request object with objects to interact with
headers, query args, form data, files, and cookies.
- A response object that can wrap other WSGI applications and handle
streaming data.
- A routing system for matching URLs to endpoints and generating URLs
for endpoints, with an extensible system for capturing variables
from URLs.
- HTTP utilities to handle entity tags, cache control, dates, user
agents, cookies, files, and more.
- A threaded WSGI server for use while developing applications
locally.
- A test client for simulating HTTP requests during testing without
requiring running a server.
Werkzeug is Unicode aware and doesn't enforce any dependencies. It is up
to the developer to choose a template engine, database adapter, and even
how to handle requests. It can be used to build all sorts of end user
applications such as blogs, wikis, or bulletin boards.
`Flask`_ wraps Werkzeug, using it to handle the details of WSGI while
providing more structure and patterns for defining powerful
applications.
Installing
----------
Install and update using `pip`_:
.. code-block:: text
pip install -U Werkzeug
A Simple Example
----------------
.. code-block:: python
from werkzeug.wrappers import Request, Response
@Request.application
def application(request):
return Response('Hello, World!')
if __name__ == '__main__':
from werkzeug.serving import run_simple
run_simple('localhost', 4000, application)
Links
-----
- Website: https://palletsprojects.com/p/werkzeug/
- Documentation: https://werkzeug.palletsprojects.com/
- Releases: https://pypi.org/project/Werkzeug/
- Code: https://github.com/pallets/werkzeug
- Issue tracker: https://github.com/pallets/werkzeug/issues
- Test status: https://dev.azure.com/pallets/werkzeug/_build
- Official chat: https://discord.gg/t6rrQZH
.. _WSGI: https://wsgi.readthedocs.io/en/latest/
.. _Flask: https://www.palletsprojects.com/p/flask/
.. _pip: https://pip.pypa.io/en/stable/quickstart/

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Copyright 2009-2020 Michael Bayer.
Permission is hereby granted, free of charge, to any person obtaining a copy of
this software and associated documentation files (the "Software"), to deal in
the Software without restriction, including without limitation the rights to
use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
of the Software, and to permit persons to whom the Software is furnished to do
so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.

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Metadata-Version: 2.1
Name: alembic
Version: 1.4.2
Summary: A database migration tool for SQLAlchemy.
Home-page: https://alembic.sqlalchemy.org
Author: Mike Bayer
Author-email: mike@zzzcomputing.com
License: MIT
Project-URL: Issue Tracker, https://github.com/sqlalchemy/alembic/
Keywords: SQLAlchemy migrations
Platform: UNKNOWN
Classifier: Development Status :: 5 - Production/Stable
Classifier: Environment :: Console
Classifier: License :: OSI Approved :: MIT License
Classifier: Intended Audience :: Developers
Classifier: Programming Language :: Python
Classifier: Programming Language :: Python :: 2
Classifier: Programming Language :: Python :: 2.7
Classifier: Programming Language :: Python :: 3
Classifier: Programming Language :: Python :: 3.5
Classifier: Programming Language :: Python :: 3.6
Classifier: Programming Language :: Python :: 3.7
Classifier: Programming Language :: Python :: 3.8
Classifier: Programming Language :: Python :: Implementation :: CPython
Classifier: Programming Language :: Python :: Implementation :: PyPy
Classifier: Topic :: Database :: Front-Ends
Requires-Python: >=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*
Requires-Dist: SQLAlchemy (>=1.1.0)
Requires-Dist: Mako
Requires-Dist: python-editor (>=0.3)
Requires-Dist: python-dateutil
Alembic is a database migrations tool written by the author
of `SQLAlchemy <http://www.sqlalchemy.org>`_. A migrations tool
offers the following functionality:
* Can emit ALTER statements to a database in order to change
the structure of tables and other constructs
* Provides a system whereby "migration scripts" may be constructed;
each script indicates a particular series of steps that can "upgrade" a
target database to a new version, and optionally a series of steps that can
"downgrade" similarly, doing the same steps in reverse.
* Allows the scripts to execute in some sequential manner.
The goals of Alembic are:
* Very open ended and transparent configuration and operation. A new
Alembic environment is generated from a set of templates which is selected
among a set of options when setup first occurs. The templates then deposit a
series of scripts that define fully how database connectivity is established
and how migration scripts are invoked; the migration scripts themselves are
generated from a template within that series of scripts. The scripts can
then be further customized to define exactly how databases will be
interacted with and what structure new migration files should take.
* Full support for transactional DDL. The default scripts ensure that all
migrations occur within a transaction - for those databases which support
this (Postgresql, Microsoft SQL Server), migrations can be tested with no
need to manually undo changes upon failure.
* Minimalist script construction. Basic operations like renaming
tables/columns, adding/removing columns, changing column attributes can be
performed through one line commands like alter_column(), rename_table(),
add_constraint(). There is no need to recreate full SQLAlchemy Table
structures for simple operations like these - the functions themselves
generate minimalist schema structures behind the scenes to achieve the given
DDL sequence.
* "auto generation" of migrations. While real world migrations are far more
complex than what can be automatically determined, Alembic can still
eliminate the initial grunt work in generating new migration directives
from an altered schema. The ``--autogenerate`` feature will inspect the
current status of a database using SQLAlchemy's schema inspection
capabilities, compare it to the current state of the database model as
specified in Python, and generate a series of "candidate" migrations,
rendering them into a new migration script as Python directives. The
developer then edits the new file, adding additional directives and data
migrations as needed, to produce a finished migration. Table and column
level changes can be detected, with constraints and indexes to follow as
well.
* Full support for migrations generated as SQL scripts. Those of us who
work in corporate environments know that direct access to DDL commands on a
production database is a rare privilege, and DBAs want textual SQL scripts.
Alembic's usage model and commands are oriented towards being able to run a
series of migrations into a textual output file as easily as it runs them
directly to a database. Care must be taken in this mode to not invoke other
operations that rely upon in-memory SELECTs of rows - Alembic tries to
provide helper constructs like bulk_insert() to help with data-oriented
operations that are compatible with script-based DDL.
* Non-linear, dependency-graph versioning. Scripts are given UUID
identifiers similarly to a DVCS, and the linkage of one script to the next
is achieved via human-editable markers within the scripts themselves.
The structure of a set of migration files is considered as a
directed-acyclic graph, meaning any migration file can be dependent
on any other arbitrary set of migration files, or none at
all. Through this open-ended system, migration files can be organized
into branches, multiple roots, and mergepoints, without restriction.
Commands are provided to produce new branches, roots, and merges of
branches automatically.
* Provide a library of ALTER constructs that can be used by any SQLAlchemy
application. The DDL constructs build upon SQLAlchemy's own DDLElement base
and can be used standalone by any application or script.
* At long last, bring SQLite and its inablity to ALTER things into the fold,
but in such a way that SQLite's very special workflow needs are accommodated
in an explicit way that makes the most of a bad situation, through the
concept of a "batch" migration, where multiple changes to a table can
be batched together to form a series of instructions for a single, subsequent
"move-and-copy" workflow. You can even use "move-and-copy" workflow for
other databases, if you want to recreate a table in the background
on a busy system.
Documentation and status of Alembic is at https://alembic.sqlalchemy.org/
The SQLAlchemy Project
======================
Alembic is part of the `SQLAlchemy Project <https://www.sqlalchemy.org>`_ and
adheres to the same standards and conventions as the core project.
Development / Bug reporting / Pull requests
___________________________________________
Please refer to the
`SQLAlchemy Community Guide <https://www.sqlalchemy.org/develop.html>`_ for
guidelines on coding and participating in this project.
Code of Conduct
_______________
Above all, SQLAlchemy places great emphasis on polite, thoughtful, and
constructive communication between users and developers.
Please see our current Code of Conduct at
`Code of Conduct <https://www.sqlalchemy.org/codeofconduct.html>`_.
License
=======
Alembic is distributed under the `MIT license
<https://opensource.org/licenses/MIT>`_.

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Wheel-Version: 1.0
Generator: bdist_wheel (0.33.6)
Root-Is-Purelib: true
Tag: py2-none-any
Tag: py3-none-any

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[console_scripts]
alembic = alembic.config:main

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alembic

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import sys
from . import context # noqa
from . import op # noqa
from .runtime import environment
from .runtime import migration
__version__ = "1.4.2"
sys.modules["alembic.migration"] = migration
sys.modules["alembic.environment"] = environment

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from .api import _render_migration_diffs # noqa
from .api import compare_metadata # noqa
from .api import produce_migrations # noqa
from .api import render_python_code # noqa
from .api import RevisionContext # noqa
from .compare import _produce_net_changes # noqa
from .compare import comparators # noqa
from .render import render_op_text # noqa
from .render import renderers # noqa
from .rewriter import Rewriter # noqa

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"""Provide the 'autogenerate' feature which can produce migration operations
automatically."""
import contextlib
from sqlalchemy import inspect
from . import compare
from . import render
from .. import util
from ..operations import ops
def compare_metadata(context, metadata):
"""Compare a database schema to that given in a
:class:`~sqlalchemy.schema.MetaData` instance.
The database connection is presented in the context
of a :class:`.MigrationContext` object, which
provides database connectivity as well as optional
comparison functions to use for datatypes and
server defaults - see the "autogenerate" arguments
at :meth:`.EnvironmentContext.configure`
for details on these.
The return format is a list of "diff" directives,
each representing individual differences::
from alembic.migration import MigrationContext
from alembic.autogenerate import compare_metadata
from sqlalchemy.schema import SchemaItem
from sqlalchemy.types import TypeEngine
from sqlalchemy import (create_engine, MetaData, Column,
Integer, String, Table)
import pprint
engine = create_engine("sqlite://")
engine.execute('''
create table foo (
id integer not null primary key,
old_data varchar,
x integer
)''')
engine.execute('''
create table bar (
data varchar
)''')
metadata = MetaData()
Table('foo', metadata,
Column('id', Integer, primary_key=True),
Column('data', Integer),
Column('x', Integer, nullable=False)
)
Table('bat', metadata,
Column('info', String)
)
mc = MigrationContext.configure(engine.connect())
diff = compare_metadata(mc, metadata)
pprint.pprint(diff, indent=2, width=20)
Output::
[ ( 'add_table',
Table('bat', MetaData(bind=None),
Column('info', String(), table=<bat>), schema=None)),
( 'remove_table',
Table(u'bar', MetaData(bind=None),
Column(u'data', VARCHAR(), table=<bar>), schema=None)),
( 'add_column',
None,
'foo',
Column('data', Integer(), table=<foo>)),
( 'remove_column',
None,
'foo',
Column(u'old_data', VARCHAR(), table=None)),
[ ( 'modify_nullable',
None,
'foo',
u'x',
{ 'existing_server_default': None,
'existing_type': INTEGER()},
True,
False)]]
:param context: a :class:`.MigrationContext`
instance.
:param metadata: a :class:`~sqlalchemy.schema.MetaData`
instance.
.. seealso::
:func:`.produce_migrations` - produces a :class:`.MigrationScript`
structure based on metadata comparison.
"""
migration_script = produce_migrations(context, metadata)
return migration_script.upgrade_ops.as_diffs()
def produce_migrations(context, metadata):
"""Produce a :class:`.MigrationScript` structure based on schema
comparison.
This function does essentially what :func:`.compare_metadata` does,
but then runs the resulting list of diffs to produce the full
:class:`.MigrationScript` object. For an example of what this looks like,
see the example in :ref:`customizing_revision`.
.. versionadded:: 0.8.0
.. seealso::
:func:`.compare_metadata` - returns more fundamental "diff"
data from comparing a schema.
"""
autogen_context = AutogenContext(context, metadata=metadata)
migration_script = ops.MigrationScript(
rev_id=None,
upgrade_ops=ops.UpgradeOps([]),
downgrade_ops=ops.DowngradeOps([]),
)
compare._populate_migration_script(autogen_context, migration_script)
return migration_script
def render_python_code(
up_or_down_op,
sqlalchemy_module_prefix="sa.",
alembic_module_prefix="op.",
render_as_batch=False,
imports=(),
render_item=None,
migration_context=None,
):
"""Render Python code given an :class:`.UpgradeOps` or
:class:`.DowngradeOps` object.
This is a convenience function that can be used to test the
autogenerate output of a user-defined :class:`.MigrationScript` structure.
"""
opts = {
"sqlalchemy_module_prefix": sqlalchemy_module_prefix,
"alembic_module_prefix": alembic_module_prefix,
"render_item": render_item,
"render_as_batch": render_as_batch,
}
if migration_context is None:
from ..runtime.migration import MigrationContext
from sqlalchemy.engine.default import DefaultDialect
migration_context = MigrationContext.configure(
dialect=DefaultDialect()
)
autogen_context = AutogenContext(migration_context, opts=opts)
autogen_context.imports = set(imports)
return render._indent(
render._render_cmd_body(up_or_down_op, autogen_context)
)
def _render_migration_diffs(context, template_args):
"""legacy, used by test_autogen_composition at the moment"""
autogen_context = AutogenContext(context)
upgrade_ops = ops.UpgradeOps([])
compare._produce_net_changes(autogen_context, upgrade_ops)
migration_script = ops.MigrationScript(
rev_id=None,
upgrade_ops=upgrade_ops,
downgrade_ops=upgrade_ops.reverse(),
)
render._render_python_into_templatevars(
autogen_context, migration_script, template_args
)
class AutogenContext(object):
"""Maintains configuration and state that's specific to an
autogenerate operation."""
metadata = None
"""The :class:`~sqlalchemy.schema.MetaData` object
representing the destination.
This object is the one that is passed within ``env.py``
to the :paramref:`.EnvironmentContext.configure.target_metadata`
parameter. It represents the structure of :class:`.Table` and other
objects as stated in the current database model, and represents the
destination structure for the database being examined.
While the :class:`~sqlalchemy.schema.MetaData` object is primarily
known as a collection of :class:`~sqlalchemy.schema.Table` objects,
it also has an :attr:`~sqlalchemy.schema.MetaData.info` dictionary
that may be used by end-user schemes to store additional schema-level
objects that are to be compared in custom autogeneration schemes.
"""
connection = None
"""The :class:`~sqlalchemy.engine.base.Connection` object currently
connected to the database backend being compared.
This is obtained from the :attr:`.MigrationContext.bind` and is
utimately set up in the ``env.py`` script.
"""
dialect = None
"""The :class:`~sqlalchemy.engine.Dialect` object currently in use.
This is normally obtained from the
:attr:`~sqlalchemy.engine.base.Connection.dialect` attribute.
"""
imports = None
"""A ``set()`` which contains string Python import directives.
The directives are to be rendered into the ``${imports}`` section
of a script template. The set is normally empty and can be modified
within hooks such as the
:paramref:`.EnvironmentContext.configure.render_item` hook.
.. versionadded:: 0.8.3
.. seealso::
:ref:`autogen_render_types`
"""
migration_context = None
"""The :class:`.MigrationContext` established by the ``env.py`` script."""
def __init__(
self, migration_context, metadata=None, opts=None, autogenerate=True
):
if (
autogenerate
and migration_context is not None
and migration_context.as_sql
):
raise util.CommandError(
"autogenerate can't use as_sql=True as it prevents querying "
"the database for schema information"
)
if opts is None:
opts = migration_context.opts
self.metadata = metadata = (
opts.get("target_metadata", None) if metadata is None else metadata
)
if (
autogenerate
and metadata is None
and migration_context is not None
and migration_context.script is not None
):
raise util.CommandError(
"Can't proceed with --autogenerate option; environment "
"script %s does not provide "
"a MetaData object or sequence of objects to the context."
% (migration_context.script.env_py_location)
)
include_symbol = opts.get("include_symbol", None)
include_object = opts.get("include_object", None)
object_filters = []
if include_symbol:
def include_symbol_filter(
object_, name, type_, reflected, compare_to
):
if type_ == "table":
return include_symbol(name, object_.schema)
else:
return True
object_filters.append(include_symbol_filter)
if include_object:
object_filters.append(include_object)
self._object_filters = object_filters
self.migration_context = migration_context
if self.migration_context is not None:
self.connection = self.migration_context.bind
self.dialect = self.migration_context.dialect
self.imports = set()
self.opts = opts
self._has_batch = False
@util.memoized_property
def inspector(self):
return inspect(self.connection)
@contextlib.contextmanager
def _within_batch(self):
self._has_batch = True
yield
self._has_batch = False
def run_filters(self, object_, name, type_, reflected, compare_to):
"""Run the context's object filters and return True if the targets
should be part of the autogenerate operation.
This method should be run for every kind of object encountered within
an autogenerate operation, giving the environment the chance
to filter what objects should be included in the comparison.
The filters here are produced directly via the
:paramref:`.EnvironmentContext.configure.include_object`
and :paramref:`.EnvironmentContext.configure.include_symbol`
functions, if present.
"""
for fn in self._object_filters:
if not fn(object_, name, type_, reflected, compare_to):
return False
else:
return True
@util.memoized_property
def sorted_tables(self):
"""Return an aggregate of the :attr:`.MetaData.sorted_tables` collection(s).
For a sequence of :class:`.MetaData` objects, this
concatenates the :attr:`.MetaData.sorted_tables` collection
for each individual :class:`.MetaData` in the order of the
sequence. It does **not** collate the sorted tables collections.
.. versionadded:: 0.9.0
"""
result = []
for m in util.to_list(self.metadata):
result.extend(m.sorted_tables)
return result
@util.memoized_property
def table_key_to_table(self):
"""Return an aggregate of the :attr:`.MetaData.tables` dictionaries.
The :attr:`.MetaData.tables` collection is a dictionary of table key
to :class:`.Table`; this method aggregates the dictionary across
multiple :class:`.MetaData` objects into one dictionary.
Duplicate table keys are **not** supported; if two :class:`.MetaData`
objects contain the same table key, an exception is raised.
.. versionadded:: 0.9.0
"""
result = {}
for m in util.to_list(self.metadata):
intersect = set(result).intersection(set(m.tables))
if intersect:
raise ValueError(
"Duplicate table keys across multiple "
"MetaData objects: %s"
% (", ".join('"%s"' % key for key in sorted(intersect)))
)
result.update(m.tables)
return result
class RevisionContext(object):
"""Maintains configuration and state that's specific to a revision
file generation operation."""
def __init__(
self,
config,
script_directory,
command_args,
process_revision_directives=None,
):
self.config = config
self.script_directory = script_directory
self.command_args = command_args
self.process_revision_directives = process_revision_directives
self.template_args = {
"config": config # Let templates use config for
# e.g. multiple databases
}
self.generated_revisions = [self._default_revision()]
def _to_script(self, migration_script):
template_args = {}
for k, v in self.template_args.items():
template_args.setdefault(k, v)
if getattr(migration_script, "_needs_render", False):
autogen_context = self._last_autogen_context
# clear out existing imports if we are doing multiple
# renders
autogen_context.imports = set()
if migration_script.imports:
autogen_context.imports.update(migration_script.imports)
render._render_python_into_templatevars(
autogen_context, migration_script, template_args
)
return self.script_directory.generate_revision(
migration_script.rev_id,
migration_script.message,
refresh=True,
head=migration_script.head,
splice=migration_script.splice,
branch_labels=migration_script.branch_label,
version_path=migration_script.version_path,
depends_on=migration_script.depends_on,
**template_args
)
def run_autogenerate(self, rev, migration_context):
self._run_environment(rev, migration_context, True)
def run_no_autogenerate(self, rev, migration_context):
self._run_environment(rev, migration_context, False)
def _run_environment(self, rev, migration_context, autogenerate):
if autogenerate:
if self.command_args["sql"]:
raise util.CommandError(
"Using --sql with --autogenerate does not make any sense"
)
if set(self.script_directory.get_revisions(rev)) != set(
self.script_directory.get_revisions("heads")
):
raise util.CommandError("Target database is not up to date.")
upgrade_token = migration_context.opts["upgrade_token"]
downgrade_token = migration_context.opts["downgrade_token"]
migration_script = self.generated_revisions[-1]
if not getattr(migration_script, "_needs_render", False):
migration_script.upgrade_ops_list[-1].upgrade_token = upgrade_token
migration_script.downgrade_ops_list[
-1
].downgrade_token = downgrade_token
migration_script._needs_render = True
else:
migration_script._upgrade_ops.append(
ops.UpgradeOps([], upgrade_token=upgrade_token)
)
migration_script._downgrade_ops.append(
ops.DowngradeOps([], downgrade_token=downgrade_token)
)
self._last_autogen_context = autogen_context = AutogenContext(
migration_context, autogenerate=autogenerate
)
if autogenerate:
compare._populate_migration_script(
autogen_context, migration_script
)
if self.process_revision_directives:
self.process_revision_directives(
migration_context, rev, self.generated_revisions
)
hook = migration_context.opts["process_revision_directives"]
if hook:
hook(migration_context, rev, self.generated_revisions)
for migration_script in self.generated_revisions:
migration_script._needs_render = True
def _default_revision(self):
op = ops.MigrationScript(
rev_id=self.command_args["rev_id"] or util.rev_id(),
message=self.command_args["message"],
upgrade_ops=ops.UpgradeOps([]),
downgrade_ops=ops.DowngradeOps([]),
head=self.command_args["head"],
splice=self.command_args["splice"],
branch_label=self.command_args["branch_label"],
version_path=self.command_args["version_path"],
depends_on=self.command_args["depends_on"],
)
return op
def generate_scripts(self):
for generated_revision in self.generated_revisions:
yield self._to_script(generated_revision)

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import re
from mako.pygen import PythonPrinter
from sqlalchemy import schema as sa_schema
from sqlalchemy import sql
from sqlalchemy import types as sqltypes
from .. import util
from ..operations import ops
from ..util import compat
from ..util import sqla_compat
from ..util.compat import string_types
from ..util.compat import StringIO
MAX_PYTHON_ARGS = 255
try:
from sqlalchemy.sql.naming import conv
def _render_gen_name(autogen_context, name):
if isinstance(name, conv):
return _f_name(_alembic_autogenerate_prefix(autogen_context), name)
else:
return name
except ImportError:
def _render_gen_name(autogen_context, name):
return name
def _indent(text):
text = re.compile(r"^", re.M).sub(" ", text).strip()
text = re.compile(r" +$", re.M).sub("", text)
return text
def _render_python_into_templatevars(
autogen_context, migration_script, template_args
):
imports = autogen_context.imports
for upgrade_ops, downgrade_ops in zip(
migration_script.upgrade_ops_list, migration_script.downgrade_ops_list
):
template_args[upgrade_ops.upgrade_token] = _indent(
_render_cmd_body(upgrade_ops, autogen_context)
)
template_args[downgrade_ops.downgrade_token] = _indent(
_render_cmd_body(downgrade_ops, autogen_context)
)
template_args["imports"] = "\n".join(sorted(imports))
default_renderers = renderers = util.Dispatcher()
def _render_cmd_body(op_container, autogen_context):
buf = StringIO()
printer = PythonPrinter(buf)
printer.writeline(
"# ### commands auto generated by Alembic - please adjust! ###"
)
has_lines = False
for op in op_container.ops:
lines = render_op(autogen_context, op)
has_lines = has_lines or lines
for line in lines:
printer.writeline(line)
if not has_lines:
printer.writeline("pass")
printer.writeline("# ### end Alembic commands ###")
return buf.getvalue()
def render_op(autogen_context, op):
renderer = renderers.dispatch(op)
lines = util.to_list(renderer(autogen_context, op))
return lines
def render_op_text(autogen_context, op):
return "\n".join(render_op(autogen_context, op))
@renderers.dispatch_for(ops.ModifyTableOps)
def _render_modify_table(autogen_context, op):
opts = autogen_context.opts
render_as_batch = opts.get("render_as_batch", False)
if op.ops:
lines = []
if render_as_batch:
with autogen_context._within_batch():
lines.append(
"with op.batch_alter_table(%r, schema=%r) as batch_op:"
% (op.table_name, op.schema)
)
for t_op in op.ops:
t_lines = render_op(autogen_context, t_op)
lines.extend(t_lines)
lines.append("")
else:
for t_op in op.ops:
t_lines = render_op(autogen_context, t_op)
lines.extend(t_lines)
return lines
else:
return []
@renderers.dispatch_for(ops.CreateTableCommentOp)
def _render_create_table_comment(autogen_context, op):
templ = (
"{prefix}create_table_comment(\n"
"{indent}'{tname}',\n"
"{indent}{comment},\n"
"{indent}existing_comment={existing},\n"
"{indent}schema={schema}\n"
")"
)
return templ.format(
prefix=_alembic_autogenerate_prefix(autogen_context),
tname=op.table_name,
comment="%r" % op.comment if op.comment is not None else None,
existing="%r" % op.existing_comment
if op.existing_comment is not None
else None,
schema="'%s'" % op.schema if op.schema is not None else None,
indent=" ",
)
@renderers.dispatch_for(ops.DropTableCommentOp)
def _render_drop_table_comment(autogen_context, op):
templ = (
"{prefix}drop_table_comment(\n"
"{indent}'{tname}',\n"
"{indent}existing_comment={existing},\n"
"{indent}schema={schema}\n"
")"
)
return templ.format(
prefix=_alembic_autogenerate_prefix(autogen_context),
tname=op.table_name,
existing="%r" % op.existing_comment
if op.existing_comment is not None
else None,
schema="'%s'" % op.schema if op.schema is not None else None,
indent=" ",
)
@renderers.dispatch_for(ops.CreateTableOp)
def _add_table(autogen_context, op):
table = op.to_table()
args = [
col
for col in [
_render_column(col, autogen_context) for col in table.columns
]
if col
] + sorted(
[
rcons
for rcons in [
_render_constraint(cons, autogen_context)
for cons in table.constraints
]
if rcons is not None
]
)
if len(args) > MAX_PYTHON_ARGS:
args = "*[" + ",\n".join(args) + "]"
else:
args = ",\n".join(args)
text = "%(prefix)screate_table(%(tablename)r,\n%(args)s" % {
"tablename": _ident(op.table_name),
"prefix": _alembic_autogenerate_prefix(autogen_context),
"args": args,
}
if op.schema:
text += ",\nschema=%r" % _ident(op.schema)
comment = sqla_compat._comment_attribute(table)
if comment:
text += ",\ncomment=%r" % _ident(comment)
for k in sorted(op.kw):
text += ",\n%s=%r" % (k.replace(" ", "_"), op.kw[k])
text += "\n)"
return text
@renderers.dispatch_for(ops.DropTableOp)
def _drop_table(autogen_context, op):
text = "%(prefix)sdrop_table(%(tname)r" % {
"prefix": _alembic_autogenerate_prefix(autogen_context),
"tname": _ident(op.table_name),
}
if op.schema:
text += ", schema=%r" % _ident(op.schema)
text += ")"
return text
@renderers.dispatch_for(ops.CreateIndexOp)
def _add_index(autogen_context, op):
index = op.to_index()
has_batch = autogen_context._has_batch
if has_batch:
tmpl = (
"%(prefix)screate_index(%(name)r, [%(columns)s], "
"unique=%(unique)r%(kwargs)s)"
)
else:
tmpl = (
"%(prefix)screate_index(%(name)r, %(table)r, [%(columns)s], "
"unique=%(unique)r%(schema)s%(kwargs)s)"
)
text = tmpl % {
"prefix": _alembic_autogenerate_prefix(autogen_context),
"name": _render_gen_name(autogen_context, index.name),
"table": _ident(index.table.name),
"columns": ", ".join(
_get_index_rendered_expressions(index, autogen_context)
),
"unique": index.unique or False,
"schema": (", schema=%r" % _ident(index.table.schema))
if index.table.schema
else "",
"kwargs": (
", "
+ ", ".join(
[
"%s=%s"
% (key, _render_potential_expr(val, autogen_context))
for key, val in index.kwargs.items()
]
)
)
if len(index.kwargs)
else "",
}
return text
@renderers.dispatch_for(ops.DropIndexOp)
def _drop_index(autogen_context, op):
has_batch = autogen_context._has_batch
if has_batch:
tmpl = "%(prefix)sdrop_index(%(name)r)"
else:
tmpl = (
"%(prefix)sdrop_index(%(name)r, "
"table_name=%(table_name)r%(schema)s)"
)
text = tmpl % {
"prefix": _alembic_autogenerate_prefix(autogen_context),
"name": _render_gen_name(autogen_context, op.index_name),
"table_name": _ident(op.table_name),
"schema": ((", schema=%r" % _ident(op.schema)) if op.schema else ""),
}
return text
@renderers.dispatch_for(ops.CreateUniqueConstraintOp)
def _add_unique_constraint(autogen_context, op):
return [_uq_constraint(op.to_constraint(), autogen_context, True)]
@renderers.dispatch_for(ops.CreateForeignKeyOp)
def _add_fk_constraint(autogen_context, op):
args = [repr(_render_gen_name(autogen_context, op.constraint_name))]
if not autogen_context._has_batch:
args.append(repr(_ident(op.source_table)))
args.extend(
[
repr(_ident(op.referent_table)),
repr([_ident(col) for col in op.local_cols]),
repr([_ident(col) for col in op.remote_cols]),
]
)
kwargs = [
"referent_schema",
"onupdate",
"ondelete",
"initially",
"deferrable",
"use_alter",
]
if not autogen_context._has_batch:
kwargs.insert(0, "source_schema")
for k in kwargs:
if k in op.kw:
value = op.kw[k]
if value is not None:
args.append("%s=%r" % (k, value))
return "%(prefix)screate_foreign_key(%(args)s)" % {
"prefix": _alembic_autogenerate_prefix(autogen_context),
"args": ", ".join(args),
}
@renderers.dispatch_for(ops.CreatePrimaryKeyOp)
def _add_pk_constraint(constraint, autogen_context):
raise NotImplementedError()
@renderers.dispatch_for(ops.CreateCheckConstraintOp)
def _add_check_constraint(constraint, autogen_context):
raise NotImplementedError()
@renderers.dispatch_for(ops.DropConstraintOp)
def _drop_constraint(autogen_context, op):
if autogen_context._has_batch:
template = "%(prefix)sdrop_constraint" "(%(name)r, type_=%(type)r)"
else:
template = (
"%(prefix)sdrop_constraint"
"(%(name)r, '%(table_name)s'%(schema)s, type_=%(type)r)"
)
text = template % {
"prefix": _alembic_autogenerate_prefix(autogen_context),
"name": _render_gen_name(autogen_context, op.constraint_name),
"table_name": _ident(op.table_name),
"type": op.constraint_type,
"schema": (", schema=%r" % _ident(op.schema)) if op.schema else "",
}
return text
@renderers.dispatch_for(ops.AddColumnOp)
def _add_column(autogen_context, op):
schema, tname, column = op.schema, op.table_name, op.column
if autogen_context._has_batch:
template = "%(prefix)sadd_column(%(column)s)"
else:
template = "%(prefix)sadd_column(%(tname)r, %(column)s"
if schema:
template += ", schema=%(schema)r"
template += ")"
text = template % {
"prefix": _alembic_autogenerate_prefix(autogen_context),
"tname": tname,
"column": _render_column(column, autogen_context),
"schema": schema,
}
return text
@renderers.dispatch_for(ops.DropColumnOp)
def _drop_column(autogen_context, op):
schema, tname, column_name = op.schema, op.table_name, op.column_name
if autogen_context._has_batch:
template = "%(prefix)sdrop_column(%(cname)r)"
else:
template = "%(prefix)sdrop_column(%(tname)r, %(cname)r"
if schema:
template += ", schema=%(schema)r"
template += ")"
text = template % {
"prefix": _alembic_autogenerate_prefix(autogen_context),
"tname": _ident(tname),
"cname": _ident(column_name),
"schema": _ident(schema),
}
return text
@renderers.dispatch_for(ops.AlterColumnOp)
def _alter_column(autogen_context, op):
tname = op.table_name
cname = op.column_name
server_default = op.modify_server_default
type_ = op.modify_type
nullable = op.modify_nullable
comment = op.modify_comment
autoincrement = op.kw.get("autoincrement", None)
existing_type = op.existing_type
existing_nullable = op.existing_nullable
existing_comment = op.existing_comment
existing_server_default = op.existing_server_default
schema = op.schema
indent = " " * 11
if autogen_context._has_batch:
template = "%(prefix)salter_column(%(cname)r"
else:
template = "%(prefix)salter_column(%(tname)r, %(cname)r"
text = template % {
"prefix": _alembic_autogenerate_prefix(autogen_context),
"tname": tname,
"cname": cname,
}
if existing_type is not None:
text += ",\n%sexisting_type=%s" % (
indent,
_repr_type(existing_type, autogen_context),
)
if server_default is not False:
rendered = _render_server_default(server_default, autogen_context)
text += ",\n%sserver_default=%s" % (indent, rendered)
if type_ is not None:
text += ",\n%stype_=%s" % (indent, _repr_type(type_, autogen_context))
if nullable is not None:
text += ",\n%snullable=%r" % (indent, nullable)
if comment is not False:
text += ",\n%scomment=%r" % (indent, comment)
if existing_comment is not None:
text += ",\n%sexisting_comment=%r" % (indent, existing_comment)
if nullable is None and existing_nullable is not None:
text += ",\n%sexisting_nullable=%r" % (indent, existing_nullable)
if autoincrement is not None:
text += ",\n%sautoincrement=%r" % (indent, autoincrement)
if server_default is False and existing_server_default:
rendered = _render_server_default(
existing_server_default, autogen_context
)
text += ",\n%sexisting_server_default=%s" % (indent, rendered)
if schema and not autogen_context._has_batch:
text += ",\n%sschema=%r" % (indent, schema)
text += ")"
return text
class _f_name(object):
def __init__(self, prefix, name):
self.prefix = prefix
self.name = name
def __repr__(self):
return "%sf(%r)" % (self.prefix, _ident(self.name))
def _ident(name):
"""produce a __repr__() object for a string identifier that may
use quoted_name() in SQLAlchemy 0.9 and greater.
The issue worked around here is that quoted_name() doesn't have
very good repr() behavior by itself when unicode is involved.
"""
if name is None:
return name
elif isinstance(name, sql.elements.quoted_name):
if compat.py2k:
# the attempt to encode to ascii here isn't super ideal,
# however we are trying to cut down on an explosion of
# u'' literals only when py2k + SQLA 0.9, in particular
# makes unit tests testing code generation very difficult
try:
return name.encode("ascii")
except UnicodeError:
return compat.text_type(name)
else:
return compat.text_type(name)
elif isinstance(name, compat.string_types):
return name
def _render_potential_expr(
value, autogen_context, wrap_in_text=True, is_server_default=False
):
if isinstance(value, sql.ClauseElement):
if wrap_in_text:
template = "%(prefix)stext(%(sql)r)"
else:
template = "%(sql)r"
return template % {
"prefix": _sqlalchemy_autogenerate_prefix(autogen_context),
"sql": autogen_context.migration_context.impl.render_ddl_sql_expr(
value, is_server_default=is_server_default
),
}
else:
return repr(value)
def _get_index_rendered_expressions(idx, autogen_context):
return [
repr(_ident(getattr(exp, "name", None)))
if isinstance(exp, sa_schema.Column)
else _render_potential_expr(exp, autogen_context)
for exp in idx.expressions
]
def _uq_constraint(constraint, autogen_context, alter):
opts = []
has_batch = autogen_context._has_batch
if constraint.deferrable:
opts.append(("deferrable", str(constraint.deferrable)))
if constraint.initially:
opts.append(("initially", str(constraint.initially)))
if not has_batch and alter and constraint.table.schema:
opts.append(("schema", _ident(constraint.table.schema)))
if not alter and constraint.name:
opts.append(
("name", _render_gen_name(autogen_context, constraint.name))
)
if alter:
args = [repr(_render_gen_name(autogen_context, constraint.name))]
if not has_batch:
args += [repr(_ident(constraint.table.name))]
args.append(repr([_ident(col.name) for col in constraint.columns]))
args.extend(["%s=%r" % (k, v) for k, v in opts])
return "%(prefix)screate_unique_constraint(%(args)s)" % {
"prefix": _alembic_autogenerate_prefix(autogen_context),
"args": ", ".join(args),
}
else:
args = [repr(_ident(col.name)) for col in constraint.columns]
args.extend(["%s=%r" % (k, v) for k, v in opts])
return "%(prefix)sUniqueConstraint(%(args)s)" % {
"prefix": _sqlalchemy_autogenerate_prefix(autogen_context),
"args": ", ".join(args),
}
def _user_autogenerate_prefix(autogen_context, target):
prefix = autogen_context.opts["user_module_prefix"]
if prefix is None:
return "%s." % target.__module__
else:
return prefix
def _sqlalchemy_autogenerate_prefix(autogen_context):
return autogen_context.opts["sqlalchemy_module_prefix"] or ""
def _alembic_autogenerate_prefix(autogen_context):
if autogen_context._has_batch:
return "batch_op."
else:
return autogen_context.opts["alembic_module_prefix"] or ""
def _user_defined_render(type_, object_, autogen_context):
if "render_item" in autogen_context.opts:
render = autogen_context.opts["render_item"]
if render:
rendered = render(type_, object_, autogen_context)
if rendered is not False:
return rendered
return False
def _render_column(column, autogen_context):
rendered = _user_defined_render("column", column, autogen_context)
if rendered is not False:
return rendered
args = []
opts = []
if column.server_default:
if sqla_compat._server_default_is_computed(column):
rendered = _render_computed(column.computed, autogen_context)
if rendered:
args.append(rendered)
else:
rendered = _render_server_default(
column.server_default, autogen_context
)
if rendered:
opts.append(("server_default", rendered))
if (
column.autoincrement is not None
and column.autoincrement != sqla_compat.AUTOINCREMENT_DEFAULT
):
opts.append(("autoincrement", column.autoincrement))
if column.nullable is not None:
opts.append(("nullable", column.nullable))
if column.system:
opts.append(("system", column.system))
comment = sqla_compat._comment_attribute(column)
if comment:
opts.append(("comment", "%r" % comment))
# TODO: for non-ascii colname, assign a "key"
return "%(prefix)sColumn(%(name)r, %(type)s, %(args)s%(kwargs)s)" % {
"prefix": _sqlalchemy_autogenerate_prefix(autogen_context),
"name": _ident(column.name),
"type": _repr_type(column.type, autogen_context),
"args": ", ".join([str(arg) for arg in args]) + ", " if args else "",
"kwargs": (
", ".join(
["%s=%s" % (kwname, val) for kwname, val in opts]
+ [
"%s=%s"
% (key, _render_potential_expr(val, autogen_context))
for key, val in sqla_compat._column_kwargs(column).items()
]
)
),
}
def _render_server_default(default, autogen_context, repr_=True):
rendered = _user_defined_render("server_default", default, autogen_context)
if rendered is not False:
return rendered
if sqla_compat.has_computed and isinstance(default, sa_schema.Computed):
return _render_computed(default, autogen_context)
elif isinstance(default, sa_schema.DefaultClause):
if isinstance(default.arg, compat.string_types):
default = default.arg
else:
return _render_potential_expr(
default.arg, autogen_context, is_server_default=True
)
if isinstance(default, string_types) and repr_:
default = repr(re.sub(r"^'|'$", "", default))
return default
def _render_computed(computed, autogen_context):
text = _render_potential_expr(
computed.sqltext, autogen_context, wrap_in_text=False
)
kwargs = {}
if computed.persisted is not None:
kwargs["persisted"] = computed.persisted
return "%(prefix)sComputed(%(text)s, %(kwargs)s)" % {
"prefix": _sqlalchemy_autogenerate_prefix(autogen_context),
"text": text,
"kwargs": (", ".join("%s=%s" % pair for pair in kwargs.items())),
}
def _repr_type(type_, autogen_context):
rendered = _user_defined_render("type", type_, autogen_context)
if rendered is not False:
return rendered
if hasattr(autogen_context.migration_context, "impl"):
impl_rt = autogen_context.migration_context.impl.render_type(
type_, autogen_context
)
else:
impl_rt = None
mod = type(type_).__module__
imports = autogen_context.imports
if mod.startswith("sqlalchemy.dialects"):
dname = re.match(r"sqlalchemy\.dialects\.(\w+)", mod).group(1)
if imports is not None:
imports.add("from sqlalchemy.dialects import %s" % dname)
if impl_rt:
return impl_rt
else:
return "%s.%r" % (dname, type_)
elif impl_rt:
return impl_rt
elif mod.startswith("sqlalchemy."):
if type(type_) is sqltypes.Variant:
return _render_Variant_type(type_, autogen_context)
if "_render_%s_type" % type_.__visit_name__ in globals():
fn = globals()["_render_%s_type" % type_.__visit_name__]
return fn(type_, autogen_context)
else:
prefix = _sqlalchemy_autogenerate_prefix(autogen_context)
return "%s%r" % (prefix, type_)
else:
prefix = _user_autogenerate_prefix(autogen_context, type_)
return "%s%r" % (prefix, type_)
def _render_ARRAY_type(type_, autogen_context):
return _render_type_w_subtype(
type_, autogen_context, "item_type", r"(.+?\()"
)
def _render_Variant_type(type_, autogen_context):
base = _repr_type(type_.impl, autogen_context)
for dialect in sorted(type_.mapping):
typ = type_.mapping[dialect]
base += ".with_variant(%s, %r)" % (
_repr_type(typ, autogen_context),
dialect,
)
return base
def _render_type_w_subtype(
type_, autogen_context, attrname, regexp, prefix=None
):
outer_repr = repr(type_)
inner_type = getattr(type_, attrname, None)
if inner_type is None:
return False
inner_repr = repr(inner_type)
inner_repr = re.sub(r"([\(\)])", r"\\\1", inner_repr)
sub_type = _repr_type(getattr(type_, attrname), autogen_context)
outer_type = re.sub(regexp + inner_repr, r"\1%s" % sub_type, outer_repr)
if prefix:
return "%s%s" % (prefix, outer_type)
mod = type(type_).__module__
if mod.startswith("sqlalchemy.dialects"):
dname = re.match(r"sqlalchemy\.dialects\.(\w+)", mod).group(1)
return "%s.%s" % (dname, outer_type)
elif mod.startswith("sqlalchemy"):
prefix = _sqlalchemy_autogenerate_prefix(autogen_context)
return "%s%s" % (prefix, outer_type)
else:
return None
_constraint_renderers = util.Dispatcher()
def _render_constraint(constraint, autogen_context):
try:
renderer = _constraint_renderers.dispatch(constraint)
except ValueError:
util.warn("No renderer is established for object %r" % constraint)
return "[Unknown Python object %r]" % constraint
else:
return renderer(constraint, autogen_context)
@_constraint_renderers.dispatch_for(sa_schema.PrimaryKeyConstraint)
def _render_primary_key(constraint, autogen_context):
rendered = _user_defined_render("primary_key", constraint, autogen_context)
if rendered is not False:
return rendered
if not constraint.columns:
return None
opts = []
if constraint.name:
opts.append(
("name", repr(_render_gen_name(autogen_context, constraint.name)))
)
return "%(prefix)sPrimaryKeyConstraint(%(args)s)" % {
"prefix": _sqlalchemy_autogenerate_prefix(autogen_context),
"args": ", ".join(
[repr(c.name) for c in constraint.columns]
+ ["%s=%s" % (kwname, val) for kwname, val in opts]
),
}
def _fk_colspec(fk, metadata_schema):
"""Implement a 'safe' version of ForeignKey._get_colspec() that
won't fail if the remote table can't be resolved.
"""
colspec = fk._get_colspec()
tokens = colspec.split(".")
tname, colname = tokens[-2:]
if metadata_schema is not None and len(tokens) == 2:
table_fullname = "%s.%s" % (metadata_schema, tname)
else:
table_fullname = ".".join(tokens[0:-1])
if (
not fk.link_to_name
and fk.parent is not None
and fk.parent.table is not None
):
# try to resolve the remote table in order to adjust for column.key.
# the FK constraint needs to be rendered in terms of the column
# name.
parent_metadata = fk.parent.table.metadata
if table_fullname in parent_metadata.tables:
col = parent_metadata.tables[table_fullname].c.get(colname)
if col is not None:
colname = _ident(col.name)
colspec = "%s.%s" % (table_fullname, colname)
return colspec
def _populate_render_fk_opts(constraint, opts):
if constraint.onupdate:
opts.append(("onupdate", repr(constraint.onupdate)))
if constraint.ondelete:
opts.append(("ondelete", repr(constraint.ondelete)))
if constraint.initially:
opts.append(("initially", repr(constraint.initially)))
if constraint.deferrable:
opts.append(("deferrable", repr(constraint.deferrable)))
if constraint.use_alter:
opts.append(("use_alter", repr(constraint.use_alter)))
@_constraint_renderers.dispatch_for(sa_schema.ForeignKeyConstraint)
def _render_foreign_key(constraint, autogen_context):
rendered = _user_defined_render("foreign_key", constraint, autogen_context)
if rendered is not False:
return rendered
opts = []
if constraint.name:
opts.append(
("name", repr(_render_gen_name(autogen_context, constraint.name)))
)
_populate_render_fk_opts(constraint, opts)
apply_metadata_schema = constraint.parent.metadata.schema
return (
"%(prefix)sForeignKeyConstraint([%(cols)s], "
"[%(refcols)s], %(args)s)"
% {
"prefix": _sqlalchemy_autogenerate_prefix(autogen_context),
"cols": ", ".join(
"%r" % _ident(f.parent.name) for f in constraint.elements
),
"refcols": ", ".join(
repr(_fk_colspec(f, apply_metadata_schema))
for f in constraint.elements
),
"args": ", ".join(
["%s=%s" % (kwname, val) for kwname, val in opts]
),
}
)
@_constraint_renderers.dispatch_for(sa_schema.UniqueConstraint)
def _render_unique_constraint(constraint, autogen_context):
rendered = _user_defined_render("unique", constraint, autogen_context)
if rendered is not False:
return rendered
return _uq_constraint(constraint, autogen_context, False)
@_constraint_renderers.dispatch_for(sa_schema.CheckConstraint)
def _render_check_constraint(constraint, autogen_context):
rendered = _user_defined_render("check", constraint, autogen_context)
if rendered is not False:
return rendered
# detect the constraint being part of
# a parent type which is probably in the Table already.
# ideally SQLAlchemy would give us more of a first class
# way to detect this.
if (
constraint._create_rule
and hasattr(constraint._create_rule, "target")
and isinstance(constraint._create_rule.target, sqltypes.TypeEngine)
):
return None
opts = []
if constraint.name:
opts.append(
("name", repr(_render_gen_name(autogen_context, constraint.name)))
)
return "%(prefix)sCheckConstraint(%(sqltext)s%(opts)s)" % {
"prefix": _sqlalchemy_autogenerate_prefix(autogen_context),
"opts": ", " + (", ".join("%s=%s" % (k, v) for k, v in opts))
if opts
else "",
"sqltext": _render_potential_expr(
constraint.sqltext, autogen_context, wrap_in_text=False
),
}
@renderers.dispatch_for(ops.ExecuteSQLOp)
def _execute_sql(autogen_context, op):
if not isinstance(op.sqltext, string_types):
raise NotImplementedError(
"Autogenerate rendering of SQL Expression language constructs "
"not supported here; please use a plain SQL string"
)
return "op.execute(%r)" % op.sqltext
renderers = default_renderers.branch()

158
venv/lib/python3.7/site-packages/alembic/autogenerate/rewriter.py
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from alembic import util
from alembic.operations import ops
class Rewriter(object):
"""A helper object that allows easy 'rewriting' of ops streams.
The :class:`.Rewriter` object is intended to be passed along
to the
:paramref:`.EnvironmentContext.configure.process_revision_directives`
parameter in an ``env.py`` script. Once constructed, any number
of "rewrites" functions can be associated with it, which will be given
the opportunity to modify the structure without having to have explicit
knowledge of the overall structure.
The function is passed the :class:`.MigrationContext` object and
``revision`` tuple that are passed to the :paramref:`.Environment
Context.configure.process_revision_directives` function normally,
and the third argument is an individual directive of the type
noted in the decorator. The function has the choice of returning
a single op directive, which normally can be the directive that
was actually passed, or a new directive to replace it, or a list
of zero or more directives to replace it.
.. seealso::
:ref:`autogen_rewriter` - usage example
.. versionadded:: 0.8
"""
_traverse = util.Dispatcher()
_chained = None
def __init__(self):
self.dispatch = util.Dispatcher()
def chain(self, other):
"""Produce a "chain" of this :class:`.Rewriter` to another.
This allows two rewriters to operate serially on a stream,
e.g.::
writer1 = autogenerate.Rewriter()
writer2 = autogenerate.Rewriter()
@writer1.rewrites(ops.AddColumnOp)
def add_column_nullable(context, revision, op):
op.column.nullable = True
return op
@writer2.rewrites(ops.AddColumnOp)
def add_column_idx(context, revision, op):
idx_op = ops.CreateIndexOp(
'ixc', op.table_name, [op.column.name])
return [
op,
idx_op
]
writer = writer1.chain(writer2)
:param other: a :class:`.Rewriter` instance
:return: a new :class:`.Rewriter` that will run the operations
of this writer, then the "other" writer, in succession.
"""
wr = self.__class__.__new__(self.__class__)
wr.__dict__.update(self.__dict__)
wr._chained = other
return wr
def rewrites(self, operator):
"""Register a function as rewriter for a given type.
The function should receive three arguments, which are
the :class:`.MigrationContext`, a ``revision`` tuple, and
an op directive of the type indicated. E.g.::
@writer1.rewrites(ops.AddColumnOp)
def add_column_nullable(context, revision, op):
op.column.nullable = True
return op
"""
return self.dispatch.dispatch_for(operator)
def _rewrite(self, context, revision, directive):
try:
_rewriter = self.dispatch.dispatch(directive)
except ValueError:
_rewriter = None
yield directive
else:
if self in directive._mutations:
yield directive
else:
for r_directive in util.to_list(
_rewriter(context, revision, directive)
):
r_directive._mutations = r_directive._mutations.union(
[self]
)
yield r_directive
def __call__(self, context, revision, directives):
self.process_revision_directives(context, revision, directives)
if self._chained:
self._chained(context, revision, directives)
@_traverse.dispatch_for(ops.MigrationScript)
def _traverse_script(self, context, revision, directive):
upgrade_ops_list = []
for upgrade_ops in directive.upgrade_ops_list:
ret = self._traverse_for(context, revision, upgrade_ops)
if len(ret) != 1:
raise ValueError(
"Can only return single object for UpgradeOps traverse"
)
upgrade_ops_list.append(ret[0])
directive.upgrade_ops = upgrade_ops_list
downgrade_ops_list = []
for downgrade_ops in directive.downgrade_ops_list:
ret = self._traverse_for(context, revision, downgrade_ops)
if len(ret) != 1:
raise ValueError(
"Can only return single object for DowngradeOps traverse"
)
downgrade_ops_list.append(ret[0])
directive.downgrade_ops = downgrade_ops_list
@_traverse.dispatch_for(ops.OpContainer)
def _traverse_op_container(self, context, revision, directive):
self._traverse_list(context, revision, directive.ops)
@_traverse.dispatch_for(ops.MigrateOperation)
def _traverse_any_directive(self, context, revision, directive):
pass
def _traverse_for(self, context, revision, directive):
directives = list(self._rewrite(context, revision, directive))
for directive in directives:
traverser = self._traverse.dispatch(directive)
traverser(self, context, revision, directive)
return directives
def _traverse_list(self, context, revision, directives):
dest = []
for directive in directives:
dest.extend(self._traverse_for(context, revision, directive))
directives[:] = dest
def process_revision_directives(self, context, revision, directives):
self._traverse_list(context, revision, directives)

611
venv/lib/python3.7/site-packages/alembic/command.py
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@ -1,611 +0,0 @@
import os
from . import autogenerate as autogen
from . import util
from .runtime.environment import EnvironmentContext
from .script import ScriptDirectory
def list_templates(config):
"""List available templates.
:param config: a :class:`.Config` object.
"""
config.print_stdout("Available templates:\n")
for tempname in os.listdir(config.get_template_directory()):
with open(
os.path.join(config.get_template_directory(), tempname, "README")
) as readme:
synopsis = next(readme)
config.print_stdout("%s - %s", tempname, synopsis)
config.print_stdout("\nTemplates are used via the 'init' command, e.g.:")
config.print_stdout("\n alembic init --template generic ./scripts")
def init(config, directory, template="generic", package=False):
"""Initialize a new scripts directory.
:param config: a :class:`.Config` object.
:param directory: string path of the target directory
:param template: string name of the migration environment template to
use.
:param package: when True, write ``__init__.py`` files into the
environment location as well as the versions/ location.
.. versionadded:: 1.2
"""
if os.access(directory, os.F_OK) and os.listdir(directory):
raise util.CommandError(
"Directory %s already exists and is not empty" % directory
)
template_dir = os.path.join(config.get_template_directory(), template)
if not os.access(template_dir, os.F_OK):
raise util.CommandError("No such template %r" % template)
if not os.access(directory, os.F_OK):
util.status(
"Creating directory %s" % os.path.abspath(directory),
os.makedirs,
directory,
)
versions = os.path.join(directory, "versions")
util.status(
"Creating directory %s" % os.path.abspath(versions),
os.makedirs,
versions,
)
script = ScriptDirectory(directory)
for file_ in os.listdir(template_dir):
file_path = os.path.join(template_dir, file_)
if file_ == "alembic.ini.mako":
config_file = os.path.abspath(config.config_file_name)
if os.access(config_file, os.F_OK):
util.msg("File %s already exists, skipping" % config_file)
else:
script._generate_template(
file_path, config_file, script_location=directory
)
elif os.path.isfile(file_path):
output_file = os.path.join(directory, file_)
script._copy_file(file_path, output_file)
if package:
for path in [
os.path.join(os.path.abspath(directory), "__init__.py"),
os.path.join(os.path.abspath(versions), "__init__.py"),
]:
file_ = util.status("Adding %s" % path, open, path, "w")
file_.close()
util.msg(
"Please edit configuration/connection/logging "
"settings in %r before proceeding." % config_file
)
def revision(
config,
message=None,
autogenerate=False,
sql=False,
head="head",
splice=False,
branch_label=None,
version_path=None,
rev_id=None,
depends_on=None,
process_revision_directives=None,
):
"""Create a new revision file.
:param config: a :class:`.Config` object.
:param message: string message to apply to the revision; this is the
``-m`` option to ``alembic revision``.
:param autogenerate: whether or not to autogenerate the script from
the database; this is the ``--autogenerate`` option to
``alembic revision``.
:param sql: whether to dump the script out as a SQL string; when specified,
the script is dumped to stdout. This is the ``--sql`` option to
``alembic revision``.
:param head: head revision to build the new revision upon as a parent;
this is the ``--head`` option to ``alembic revision``.
:param splice: whether or not the new revision should be made into a
new head of its own; is required when the given ``head`` is not itself
a head. This is the ``--splice`` option to ``alembic revision``.
:param branch_label: string label to apply to the branch; this is the
``--branch-label`` option to ``alembic revision``.
:param version_path: string symbol identifying a specific version path
from the configuration; this is the ``--version-path`` option to
``alembic revision``.
:param rev_id: optional revision identifier to use instead of having
one generated; this is the ``--rev-id`` option to ``alembic revision``.
:param depends_on: optional list of "depends on" identifiers; this is the
``--depends-on`` option to ``alembic revision``.
:param process_revision_directives: this is a callable that takes the
same form as the callable described at
:paramref:`.EnvironmentContext.configure.process_revision_directives`;
will be applied to the structure generated by the revision process
where it can be altered programmatically. Note that unlike all
the other parameters, this option is only available via programmatic
use of :func:`.command.revision`
.. versionadded:: 0.9.0
"""
script_directory = ScriptDirectory.from_config(config)
command_args = dict(
message=message,
autogenerate=autogenerate,
sql=sql,
head=head,
splice=splice,
branch_label=branch_label,
version_path=version_path,
rev_id=rev_id,
depends_on=depends_on,
)
revision_context = autogen.RevisionContext(
config,
script_directory,
command_args,
process_revision_directives=process_revision_directives,
)
environment = util.asbool(config.get_main_option("revision_environment"))
if autogenerate:
environment = True
if sql:
raise util.CommandError(
"Using --sql with --autogenerate does not make any sense"
)
def retrieve_migrations(rev, context):
revision_context.run_autogenerate(rev, context)
return []
elif environment:
def retrieve_migrations(rev, context):
revision_context.run_no_autogenerate(rev, context)
return []
elif sql:
raise util.CommandError(
"Using --sql with the revision command when "
"revision_environment is not configured does not make any sense"
)
if environment:
with EnvironmentContext(
config,
script_directory,
fn=retrieve_migrations,
as_sql=sql,
template_args=revision_context.template_args,
revision_context=revision_context,
):
script_directory.run_env()
# the revision_context now has MigrationScript structure(s) present.
# these could theoretically be further processed / rewritten *here*,
# in addition to the hooks present within each run_migrations() call,
# or at the end of env.py run_migrations_online().
scripts = [script for script in revision_context.generate_scripts()]
if len(scripts) == 1:
return scripts[0]
else:
return scripts
def merge(config, revisions, message=None, branch_label=None, rev_id=None):
"""Merge two revisions together. Creates a new migration file.
.. versionadded:: 0.7.0
:param config: a :class:`.Config` instance
:param message: string message to apply to the revision
:param branch_label: string label name to apply to the new revision
:param rev_id: hardcoded revision identifier instead of generating a new
one.
.. seealso::
:ref:`branches`
"""
script = ScriptDirectory.from_config(config)
template_args = {
"config": config # Let templates use config for
# e.g. multiple databases
}
return script.generate_revision(
rev_id or util.rev_id(),
message,
refresh=True,
head=revisions,
branch_labels=branch_label,
**template_args
)
def upgrade(config, revision, sql=False, tag=None):
"""Upgrade to a later version.
:param config: a :class:`.Config` instance.
:param revision: string revision target or range for --sql mode
:param sql: if True, use ``--sql`` mode
:param tag: an arbitrary "tag" that can be intercepted by custom
``env.py`` scripts via the :meth:`.EnvironmentContext.get_tag_argument`
method.
"""
script = ScriptDirectory.from_config(config)
starting_rev = None
if ":" in revision:
if not sql:
raise util.CommandError("Range revision not allowed")
starting_rev, revision = revision.split(":", 2)
def upgrade(rev, context):
return script._upgrade_revs(revision, rev)
with EnvironmentContext(
config,
script,
fn=upgrade,
as_sql=sql,
starting_rev=starting_rev,
destination_rev=revision,
tag=tag,
):
script.run_env()
def downgrade(config, revision, sql=False, tag=None):
"""Revert to a previous version.
:param config: a :class:`.Config` instance.
:param revision: string revision target or range for --sql mode
:param sql: if True, use ``--sql`` mode
:param tag: an arbitrary "tag" that can be intercepted by custom
``env.py`` scripts via the :meth:`.EnvironmentContext.get_tag_argument`
method.
"""
script = ScriptDirectory.from_config(config)
starting_rev = None
if ":" in revision:
if not sql:
raise util.CommandError("Range revision not allowed")
starting_rev, revision = revision.split(":", 2)
elif sql:
raise util.CommandError(
"downgrade with --sql requires <fromrev>:<torev>"
)
def downgrade(rev, context):
return script._downgrade_revs(revision, rev)
with EnvironmentContext(
config,
script,
fn=downgrade,
as_sql=sql,
starting_rev=starting_rev,
destination_rev=revision,
tag=tag,
):
script.run_env()
def show(config, rev):
"""Show the revision(s) denoted by the given symbol.
:param config: a :class:`.Config` instance.
:param revision: string revision target
"""
script = ScriptDirectory.from_config(config)
if rev == "current":
def show_current(rev, context):
for sc in script.get_revisions(rev):
config.print_stdout(sc.log_entry)
return []
with EnvironmentContext(config, script, fn=show_current):
script.run_env()
else:
for sc in script.get_revisions(rev):
config.print_stdout(sc.log_entry)
def history(config, rev_range=None, verbose=False, indicate_current=False):
"""List changeset scripts in chronological order.
:param config: a :class:`.Config` instance.
:param rev_range: string revision range
:param verbose: output in verbose mode.
:param indicate_current: indicate current revision.
..versionadded:: 0.9.9
"""
script = ScriptDirectory.from_config(config)
if rev_range is not None:
if ":" not in rev_range:
raise util.CommandError(
"History range requires [start]:[end], " "[start]:, or :[end]"
)
base, head = rev_range.strip().split(":")
else:
base = head = None
environment = (
util.asbool(config.get_main_option("revision_environment"))
or indicate_current
)
def _display_history(config, script, base, head, currents=()):
for sc in script.walk_revisions(
base=base or "base", head=head or "heads"
):
if indicate_current:
sc._db_current_indicator = sc.revision in currents
config.print_stdout(
sc.cmd_format(
verbose=verbose,
include_branches=True,
include_doc=True,
include_parents=True,
)
)
def _display_history_w_current(config, script, base, head):
def _display_current_history(rev, context):
if head == "current":
_display_history(config, script, base, rev, rev)
elif base == "current":
_display_history(config, script, rev, head, rev)
else:
_display_history(config, script, base, head, rev)
return []
with EnvironmentContext(config, script, fn=_display_current_history):
script.run_env()
if base == "current" or head == "current" or environment:
_display_history_w_current(config, script, base, head)
else:
_display_history(config, script, base, head)
def heads(config, verbose=False, resolve_dependencies=False):
"""Show current available heads in the script directory.
:param config: a :class:`.Config` instance.
:param verbose: output in verbose mode.
:param resolve_dependencies: treat dependency version as down revisions.
"""
script = ScriptDirectory.from_config(config)
if resolve_dependencies:
heads = script.get_revisions("heads")
else:
heads = script.get_revisions(script.get_heads())
for rev in heads:
config.print_stdout(
rev.cmd_format(
verbose, include_branches=True, tree_indicators=False
)
)
def branches(config, verbose=False):
"""Show current branch points.
:param config: a :class:`.Config` instance.
:param verbose: output in verbose mode.
"""
script = ScriptDirectory.from_config(config)
for sc in script.walk_revisions():
if sc.is_branch_point:
config.print_stdout(
"%s\n%s\n",
sc.cmd_format(verbose, include_branches=True),
"\n".join(
"%s -> %s"
% (
" " * len(str(sc.revision)),
rev_obj.cmd_format(
False, include_branches=True, include_doc=verbose
),
)
for rev_obj in (
script.get_revision(rev) for rev in sc.nextrev
)
),
)
def current(config, verbose=False, head_only=False):
"""Display the current revision for a database.
:param config: a :class:`.Config` instance.
:param verbose: output in verbose mode.
:param head_only: deprecated; use ``verbose`` for additional output.
"""
script = ScriptDirectory.from_config(config)
if head_only:
util.warn("--head-only is deprecated", stacklevel=3)
def display_version(rev, context):
if verbose:
config.print_stdout(
"Current revision(s) for %s:",
util.obfuscate_url_pw(context.connection.engine.url),
)
for rev in script.get_all_current(rev):
config.print_stdout(rev.cmd_format(verbose))
return []
with EnvironmentContext(config, script, fn=display_version):
script.run_env()
def stamp(config, revision, sql=False, tag=None, purge=False):
"""'stamp' the revision table with the given revision; don't
run any migrations.
:param config: a :class:`.Config` instance.
:param revision: target revision or list of revisions. May be a list
to indicate stamping of multiple branch heads.
.. note:: this parameter is called "revisions" in the command line
interface.
.. versionchanged:: 1.2 The revision may be a single revision or
list of revisions when stamping multiple branch heads.
:param sql: use ``--sql`` mode
:param tag: an arbitrary "tag" that can be intercepted by custom
``env.py`` scripts via the :class:`.EnvironmentContext.get_tag_argument`
method.
:param purge: delete all entries in the version table before stamping.
.. versionadded:: 1.2
"""
script = ScriptDirectory.from_config(config)
if sql:
destination_revs = []
starting_rev = None
for _revision in util.to_list(revision):
if ":" in _revision:
srev, _revision = _revision.split(":", 2)
if starting_rev != srev:
if starting_rev is None:
starting_rev = srev
else:
raise util.CommandError(
"Stamp operation with --sql only supports a "
"single starting revision at a time"
)
destination_revs.append(_revision)
else:
destination_revs = util.to_list(revision)
def do_stamp(rev, context):
return script._stamp_revs(util.to_tuple(destination_revs), rev)
with EnvironmentContext(
config,
script,
fn=do_stamp,
as_sql=sql,
starting_rev=starting_rev if sql else None,
destination_rev=util.to_tuple(destination_revs),
tag=tag,
purge=purge,
):
script.run_env()
def edit(config, rev):
"""Edit revision script(s) using $EDITOR.
:param config: a :class:`.Config` instance.
:param rev: target revision.
"""
script = ScriptDirectory.from_config(config)
if rev == "current":
def edit_current(rev, context):
if not rev:
raise util.CommandError("No current revisions")
for sc in script.get_revisions(rev):
util.edit(sc.path)
return []
with EnvironmentContext(config, script, fn=edit_current):
script.run_env()
else:
revs = script.get_revisions(rev)
if not revs:
raise util.CommandError(
"No revision files indicated by symbol '%s'" % rev
)
for sc in revs:
util.edit(sc.path)

581
venv/lib/python3.7/site-packages/alembic/config.py
Unescape Escape View File

@ -1,581 +0,0 @@
from argparse import ArgumentParser
import inspect
import os
import sys
from . import command
from . import util
from .util import compat
from .util.compat import SafeConfigParser
class Config(object):
r"""Represent an Alembic configuration.
Within an ``env.py`` script, this is available
via the :attr:`.EnvironmentContext.config` attribute,
which in turn is available at ``alembic.context``::
from alembic import context
some_param = context.config.get_main_option("my option")
When invoking Alembic programatically, a new
:class:`.Config` can be created by passing
the name of an .ini file to the constructor::
from alembic.config import Config
alembic_cfg = Config("/path/to/yourapp/alembic.ini")
With a :class:`.Config` object, you can then
run Alembic commands programmatically using the directives
in :mod:`alembic.command`.
The :class:`.Config` object can also be constructed without
a filename. Values can be set programmatically, and
new sections will be created as needed::
from alembic.config import Config
alembic_cfg = Config()
alembic_cfg.set_main_option("script_location", "myapp:migrations")
alembic_cfg.set_main_option("sqlalchemy.url", "postgresql://foo/bar")
alembic_cfg.set_section_option("mysection", "foo", "bar")
.. warning::
When using programmatic configuration, make sure the
``env.py`` file in use is compatible with the target configuration;
including that the call to Python ``logging.fileConfig()`` is
omitted if the programmatic configuration doesn't actually include
logging directives.
For passing non-string values to environments, such as connections and
engines, use the :attr:`.Config.attributes` dictionary::
with engine.begin() as connection:
alembic_cfg.attributes['connection'] = connection
command.upgrade(alembic_cfg, "head")
:param file\_: name of the .ini file to open.
:param ini_section: name of the main Alembic section within the
.ini file
:param output_buffer: optional file-like input buffer which
will be passed to the :class:`.MigrationContext` - used to redirect
the output of "offline generation" when using Alembic programmatically.
:param stdout: buffer where the "print" output of commands will be sent.
Defaults to ``sys.stdout``.
.. versionadded:: 0.4
:param config_args: A dictionary of keys and values that will be used
for substitution in the alembic config file. The dictionary as given
is **copied** to a new one, stored locally as the attribute
``.config_args``. When the :attr:`.Config.file_config` attribute is
first invoked, the replacement variable ``here`` will be added to this
dictionary before the dictionary is passed to ``SafeConfigParser()``
to parse the .ini file.
.. versionadded:: 0.7.0
:param attributes: optional dictionary of arbitrary Python keys/values,
which will be populated into the :attr:`.Config.attributes` dictionary.
.. versionadded:: 0.7.5
.. seealso::
:ref:`connection_sharing`
"""
def __init__(
self,
file_=None,
ini_section="alembic",
output_buffer=None,
stdout=sys.stdout,
cmd_opts=None,
config_args=util.immutabledict(),
attributes=None,
):
"""Construct a new :class:`.Config`
"""
self.config_file_name = file_
self.config_ini_section = ini_section
self.output_buffer = output_buffer
self.stdout = stdout
self.cmd_opts = cmd_opts
self.config_args = dict(config_args)
if attributes:
self.attributes.update(attributes)
cmd_opts = None
"""The command-line options passed to the ``alembic`` script.
Within an ``env.py`` script this can be accessed via the
:attr:`.EnvironmentContext.config` attribute.
.. versionadded:: 0.6.0
.. seealso::
:meth:`.EnvironmentContext.get_x_argument`
"""
config_file_name = None
"""Filesystem path to the .ini file in use."""
config_ini_section = None
"""Name of the config file section to read basic configuration
from. Defaults to ``alembic``, that is the ``[alembic]`` section
of the .ini file. This value is modified using the ``-n/--name``
option to the Alembic runnier.
"""
@util.memoized_property
def attributes(self):
"""A Python dictionary for storage of additional state.
This is a utility dictionary which can include not just strings but
engines, connections, schema objects, or anything else.
Use this to pass objects into an env.py script, such as passing
a :class:`sqlalchemy.engine.base.Connection` when calling
commands from :mod:`alembic.command` programmatically.
.. versionadded:: 0.7.5
.. seealso::
:ref:`connection_sharing`
:paramref:`.Config.attributes`
"""
return {}
def print_stdout(self, text, *arg):
"""Render a message to standard out.
When :meth:`.Config.print_stdout` is called with additional args
those arguments will formatted against the provided text,
otherwise we simply output the provided text verbatim.
e.g.::
>>> config.print_stdout('Some text %s', 'arg')
Some Text arg
"""
if arg:
output = compat.text_type(text) % arg
else:
output = compat.text_type(text)
util.write_outstream(self.stdout, output, "\n")
@util.memoized_property
def file_config(self):
"""Return the underlying ``ConfigParser`` object.
Direct access to the .ini file is available here,
though the :meth:`.Config.get_section` and
:meth:`.Config.get_main_option`
methods provide a possibly simpler interface.
"""
if self.config_file_name:
here = os.path.abspath(os.path.dirname(self.config_file_name))
else:
here = ""
self.config_args["here"] = here
file_config = SafeConfigParser(self.config_args)
if self.config_file_name:
file_config.read([self.config_file_name])
else:
file_config.add_section(self.config_ini_section)
return file_config
def get_template_directory(self):
"""Return the directory where Alembic setup templates are found.
This method is used by the alembic ``init`` and ``list_templates``
commands.
"""
import alembic
package_dir = os.path.abspath(os.path.dirname(alembic.__file__))
return os.path.join(package_dir, "templates")
def get_section(self, name, default=None):
"""Return all the configuration options from a given .ini file section
as a dictionary.
"""
if not self.file_config.has_section(name):
return default
return dict(self.file_config.items(name))
def set_main_option(self, name, value):
"""Set an option programmatically within the 'main' section.
This overrides whatever was in the .ini file.
:param name: name of the value
:param value: the value. Note that this value is passed to
``ConfigParser.set``, which supports variable interpolation using
pyformat (e.g. ``%(some_value)s``). A raw percent sign not part of
an interpolation symbol must therefore be escaped, e.g. ``%%``.
The given value may refer to another value already in the file
using the interpolation format.
"""
self.set_section_option(self.config_ini_section, name, value)
def remove_main_option(self, name):
self.file_config.remove_option(self.config_ini_section, name)
def set_section_option(self, section, name, value):
"""Set an option programmatically within the given section.
The section is created if it doesn't exist already.
The value here will override whatever was in the .ini
file.
:param section: name of the section
:param name: name of the value
:param value: the value. Note that this value is passed to
``ConfigParser.set``, which supports variable interpolation using
pyformat (e.g. ``%(some_value)s``). A raw percent sign not part of
an interpolation symbol must therefore be escaped, e.g. ``%%``.
The given value may refer to another value already in the file
using the interpolation format.
"""
if not self.file_config.has_section(section):
self.file_config.add_section(section)
self.file_config.set(section, name, value)
def get_section_option(self, section, name, default=None):
"""Return an option from the given section of the .ini file.
"""
if not self.file_config.has_section(section):
raise util.CommandError(
"No config file %r found, or file has no "
"'[%s]' section" % (self.config_file_name, section)
)
if self.file_config.has_option(section, name):
return self.file_config.get(section, name)
else:
return default
def get_main_option(self, name, default=None):
"""Return an option from the 'main' section of the .ini file.
This defaults to being a key from the ``[alembic]``
section, unless the ``-n/--name`` flag were used to
indicate a different section.
"""
return self.get_section_option(self.config_ini_section, name, default)
class CommandLine(object):
def __init__(self, prog=None):
self._generate_args(prog)
def _generate_args(self, prog):
def add_options(fn, parser, positional, kwargs):
kwargs_opts = {
"template": (
"-t",
"--template",
dict(
default="generic",
type=str,
help="Setup template for use with 'init'",
),
),
"message": (
"-m",
"--message",
dict(
type=str, help="Message string to use with 'revision'"
),
),
"sql": (
"--sql",
dict(
action="store_true",
help="Don't emit SQL to database - dump to "
"standard output/file instead. See docs on "
"offline mode.",
),
),
"tag": (
"--tag",
dict(
type=str,
help="Arbitrary 'tag' name - can be used by "
"custom env.py scripts.",
),
),
"head": (
"--head",
dict(
type=str,
help="Specify head revision or <branchname>@head "
"to base new revision on.",
),
),
"splice": (
"--splice",
dict(
action="store_true",
help="Allow a non-head revision as the "
"'head' to splice onto",
),
),
"depends_on": (
"--depends-on",
dict(
action="append",
help="Specify one or more revision identifiers "
"which this revision should depend on.",
),
),
"rev_id": (
"--rev-id",
dict(
type=str,
help="Specify a hardcoded revision id instead of "
"generating one",
),
),
"version_path": (
"--version-path",
dict(
type=str,
help="Specify specific path from config for "
"version file",
),
),
"branch_label": (
"--branch-label",
dict(
type=str,
help="Specify a branch label to apply to the "
"new revision",
),
),
"verbose": (
"-v",
"--verbose",
dict(action="store_true", help="Use more verbose output"),
),
"resolve_dependencies": (
"--resolve-dependencies",
dict(
action="store_true",
help="Treat dependency versions as down revisions",
),
),
"autogenerate": (
"--autogenerate",
dict(
action="store_true",
help="Populate revision script with candidate "
"migration operations, based on comparison "
"of database to model.",
),
),
"head_only": (
"--head-only",
dict(
action="store_true",
help="Deprecated. Use --verbose for "
"additional output",
),
),
"rev_range": (
"-r",
"--rev-range",
dict(
action="store",
help="Specify a revision range; "
"format is [start]:[end]",
),
),
"indicate_current": (
"-i",
"--indicate-current",
dict(
action="store_true",
help="Indicate the current revision",
),
),
"purge": (
"--purge",
dict(
action="store_true",
help="Unconditionally erase the version table "
"before stamping",
),
),
"package": (
"--package",
dict(
action="store_true",
help="Write empty __init__.py files to the "
"environment and version locations",
),
),
}
positional_help = {
"directory": "location of scripts directory",
"revision": "revision identifier",
"revisions": "one or more revisions, or 'heads' for all heads",
}
for arg in kwargs:
if arg in kwargs_opts:
args = kwargs_opts[arg]
args, kw = args[0:-1], args[-1]
parser.add_argument(*args, **kw)
for arg in positional:
if (
arg == "revisions"
or fn in positional_translations
and positional_translations[fn][arg] == "revisions"
):
subparser.add_argument(
"revisions",
nargs="+",
help=positional_help.get("revisions"),
)
else:
subparser.add_argument(arg, help=positional_help.get(arg))
parser = ArgumentParser(prog=prog)
parser.add_argument(
"-c",
"--config",
type=str,
default=os.environ.get("ALEMBIC_CONFIG", "alembic.ini"),
help="Alternate config file; defaults to value of "
'ALEMBIC_CONFIG environment variable, or "alembic.ini"',
)
parser.add_argument(
"-n",
"--name",
type=str,
default="alembic",
help="Name of section in .ini file to " "use for Alembic config",
)
parser.add_argument(
"-x",
action="append",
help="Additional arguments consumed by "
"custom env.py scripts, e.g. -x "
"setting1=somesetting -x setting2=somesetting",
)
parser.add_argument(
"--raiseerr",
action="store_true",
help="Raise a full stack trace on error",
)
subparsers = parser.add_subparsers()
positional_translations = {command.stamp: {"revision": "revisions"}}
for fn in [getattr(command, n) for n in dir(command)]:
if (
inspect.isfunction(fn)
and fn.__name__[0] != "_"
and fn.__module__ == "alembic.command"
):
spec = compat.inspect_getargspec(fn)
if spec[3]:
positional = spec[0][1 : -len(spec[3])]
kwarg = spec[0][-len(spec[3]) :]
else:
positional = spec[0][1:]
kwarg = []
if fn in positional_translations:
positional = [
positional_translations[fn].get(name, name)
for name in positional
]
# parse first line(s) of helptext without a line break
help_ = fn.__doc__
if help_:
help_text = []
for line in help_.split("\n"):
if not line.strip():
break
else:
help_text.append(line.strip())
else:
help_text = ""
subparser = subparsers.add_parser(
fn.__name__, help=" ".join(help_text)
)
add_options(fn, subparser, positional, kwarg)
subparser.set_defaults(cmd=(fn, positional, kwarg))
self.parser = parser
def run_cmd(self, config, options):
fn, positional, kwarg = options.cmd
try:
fn(
config,
*[getattr(options, k, None) for k in positional],
**dict((k, getattr(options, k, None)) for k in kwarg)
)
except util.CommandError as e:
if options.raiseerr:
raise
else:
util.err(str(e))
def main(self, argv=None):
options = self.parser.parse_args(argv)
if not hasattr(options, "cmd"):
# see http://bugs.python.org/issue9253, argparse
# behavior changed incompatibly in py3.3
self.parser.error("too few arguments")
else:
cfg = Config(
file_=options.config,
ini_section=options.name,
cmd_opts=options,
)
self.run_cmd(cfg, options)
def main(argv=None, prog=None, **kwargs):
"""The console runner function for Alembic."""
CommandLine(prog=prog).main(argv=argv)
if __name__ == "__main__":
main()

5
venv/lib/python3.7/site-packages/alembic/context.py
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@ -1,5 +0,0 @@
from .runtime.environment import EnvironmentContext
# create proxy functions for
# each method on the EnvironmentContext class.
EnvironmentContext.create_module_class_proxy(globals(), locals())

6
venv/lib/python3.7/site-packages/alembic/ddl/__init__.py
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@ -1,6 +0,0 @@
from . import mssql # noqa
from . import mysql # noqa
from . import oracle # noqa
from . import postgresql # noqa
from . import sqlite # noqa
from .impl import DefaultImpl # noqa

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venv/lib/python3.7/site-packages/alembic/ddl/__pycache__/__init__.cpython-37.pyc
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