You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
642 lines
23 KiB
Python
642 lines
23 KiB
Python
2 years ago
|
"""A ZMQ-based subclass of InteractiveShell.
|
||
|
|
|
||
|
|
This code is meant to ease the refactoring of the base InteractiveShell into
|
||
|
|
something with a cleaner architecture for 2-process use, without actually
|
||
|
|
breaking InteractiveShell itself. So we're doing something a bit ugly, where
|
||
|
|
we subclass and override what we want to fix. Once this is working well, we
|
||
|
|
can go back to the base class and refactor the code for a cleaner inheritance
|
||
|
|
implementation that doesn't rely on so much monkeypatching.
|
||
|
|
|
||
|
|
But this lets us maintain a fully working IPython as we develop the new
|
||
|
|
machinery. This should thus be thought of as scaffolding.
|
||
|
|
"""
|
||
|
|
|
||
|
|
# Copyright (c) IPython Development Team.
|
||
|
|
# Distributed under the terms of the Modified BSD License.
|
||
|
|
|
||
|
|
import os
|
||
|
|
import sys
|
||
|
|
import warnings
|
||
|
|
from threading import local
|
||
|
|
|
||
|
|
from IPython.core import page, payloadpage
|
||
|
|
from IPython.core.autocall import ZMQExitAutocall
|
||
|
|
from IPython.core.displaypub import DisplayPublisher
|
||
|
|
from IPython.core.error import UsageError
|
||
|
|
from IPython.core.interactiveshell import InteractiveShell, InteractiveShellABC
|
||
|
|
from IPython.core.magic import Magics, line_magic, magics_class
|
||
|
|
from IPython.core.magics import CodeMagics, MacroToEdit
|
||
|
|
from IPython.core.usage import default_banner
|
||
|
|
from IPython.display import Javascript, display
|
||
|
|
from IPython.utils import openpy
|
||
|
|
from IPython.utils.process import arg_split, system
|
||
|
|
from jupyter_client.session import Session, extract_header
|
||
|
|
from jupyter_core.paths import jupyter_runtime_dir
|
||
|
|
from traitlets import Any, CBool, CBytes, Dict, Instance, Type, default, observe
|
||
|
|
|
||
|
|
from ipykernel import connect_qtconsole, get_connection_file, get_connection_info
|
||
|
|
from ipykernel.displayhook import ZMQShellDisplayHook
|
||
|
|
from ipykernel.jsonutil import encode_images, json_clean
|
||
|
|
|
||
|
|
# -----------------------------------------------------------------------------
|
||
|
|
# Functions and classes
|
||
|
|
# -----------------------------------------------------------------------------
|
||
|
|
|
||
|
|
|
||
|
|
class ZMQDisplayPublisher(DisplayPublisher):
|
||
|
|
"""A display publisher that publishes data using a ZeroMQ PUB socket."""
|
||
|
|
|
||
|
|
session = Instance(Session, allow_none=True)
|
||
|
|
pub_socket = Any(allow_none=True)
|
||
|
|
parent_header = Dict({})
|
||
|
|
topic = CBytes(b"display_data")
|
||
|
|
|
||
|
|
# thread_local:
|
||
|
|
# An attribute used to ensure the correct output message
|
||
|
|
# is processed. See ipykernel Issue 113 for a discussion.
|
||
|
|
_thread_local = Any()
|
||
|
|
|
||
|
|
def set_parent(self, parent):
|
||
|
|
"""Set the parent for outbound messages."""
|
||
|
|
self.parent_header = extract_header(parent)
|
||
|
|
|
||
|
|
def _flush_streams(self):
|
||
|
|
"""flush IO Streams prior to display"""
|
||
|
|
sys.stdout.flush()
|
||
|
|
sys.stderr.flush()
|
||
|
|
|
||
|
|
@default("_thread_local")
|
||
|
|
def _default_thread_local(self):
|
||
|
|
"""Initialize our thread local storage"""
|
||
|
|
return local()
|
||
|
|
|
||
|
|
@property
|
||
|
|
def _hooks(self):
|
||
|
|
if not hasattr(self._thread_local, "hooks"):
|
||
|
|
# create new list for a new thread
|
||
|
|
self._thread_local.hooks = []
|
||
|
|
return self._thread_local.hooks
|
||
|
|
|
||
|
|
def publish(
|
||
|
|
self,
|
||
|
|
data,
|
||
|
|
metadata=None,
|
||
|
|
transient=None,
|
||
|
|
update=False,
|
||
|
|
):
|
||
|
|
"""Publish a display-data message
|
||
|
|
|
||
|
|
Parameters
|
||
|
|
----------
|
||
|
|
data : dict
|
||
|
|
A mime-bundle dict, keyed by mime-type.
|
||
|
|
metadata : dict, optional
|
||
|
|
Metadata associated with the data.
|
||
|
|
transient : dict, optional, keyword-only
|
||
|
|
Transient data that may only be relevant during a live display,
|
||
|
|
such as display_id.
|
||
|
|
Transient data should not be persisted to documents.
|
||
|
|
update : bool, optional, keyword-only
|
||
|
|
If True, send an update_display_data message instead of display_data.
|
||
|
|
"""
|
||
|
|
self._flush_streams()
|
||
|
|
if metadata is None:
|
||
|
|
metadata = {}
|
||
|
|
if transient is None:
|
||
|
|
transient = {}
|
||
|
|
self._validate_data(data, metadata)
|
||
|
|
content = {}
|
||
|
|
content["data"] = encode_images(data)
|
||
|
|
content["metadata"] = metadata
|
||
|
|
content["transient"] = transient
|
||
|
|
|
||
|
|
msg_type = "update_display_data" if update else "display_data"
|
||
|
|
|
||
|
|
# Use 2-stage process to send a message,
|
||
|
|
# in order to put it through the transform
|
||
|
|
# hooks before potentially sending.
|
||
|
|
msg = self.session.msg(msg_type, json_clean(content), parent=self.parent_header)
|
||
|
|
|
||
|
|
# Each transform either returns a new
|
||
|
|
# message or None. If None is returned,
|
||
|
|
# the message has been 'used' and we return.
|
||
|
|
for hook in self._hooks:
|
||
|
|
msg = hook(msg)
|
||
|
|
if msg is None:
|
||
|
|
return
|
||
|
|
|
||
|
|
self.session.send(
|
||
|
|
self.pub_socket,
|
||
|
|
msg,
|
||
|
|
ident=self.topic,
|
||
|
|
)
|
||
|
|
|
||
|
|
def clear_output(self, wait=False):
|
||
|
|
"""Clear output associated with the current execution (cell).
|
||
|
|
|
||
|
|
Parameters
|
||
|
|
----------
|
||
|
|
wait : bool (default: False)
|
||
|
|
If True, the output will not be cleared immediately,
|
||
|
|
instead waiting for the next display before clearing.
|
||
|
|
This reduces bounce during repeated clear & display loops.
|
||
|
|
|
||
|
|
"""
|
||
|
|
content = dict(wait=wait)
|
||
|
|
self._flush_streams()
|
||
|
|
self.session.send(
|
||
|
|
self.pub_socket,
|
||
|
|
"clear_output",
|
||
|
|
content,
|
||
|
|
parent=self.parent_header,
|
||
|
|
ident=self.topic,
|
||
|
|
)
|
||
|
|
|
||
|
|
def register_hook(self, hook):
|
||
|
|
"""
|
||
|
|
Registers a hook with the thread-local storage.
|
||
|
|
|
||
|
|
Parameters
|
||
|
|
----------
|
||
|
|
hook : Any callable object
|
||
|
|
|
||
|
|
Returns
|
||
|
|
-------
|
||
|
|
Either a publishable message, or `None`.
|
||
|
|
The DisplayHook objects must return a message from
|
||
|
|
the __call__ method if they still require the
|
||
|
|
`session.send` method to be called after transformation.
|
||
|
|
Returning `None` will halt that execution path, and
|
||
|
|
session.send will not be called.
|
||
|
|
"""
|
||
|
|
self._hooks.append(hook)
|
||
|
|
|
||
|
|
def unregister_hook(self, hook):
|
||
|
|
"""
|
||
|
|
Un-registers a hook with the thread-local storage.
|
||
|
|
|
||
|
|
Parameters
|
||
|
|
----------
|
||
|
|
hook : Any callable object which has previously been
|
||
|
|
registered as a hook.
|
||
|
|
|
||
|
|
Returns
|
||
|
|
-------
|
||
|
|
bool - `True` if the hook was removed, `False` if it wasn't
|
||
|
|
found.
|
||
|
|
"""
|
||
|
|
try:
|
||
|
|
self._hooks.remove(hook)
|
||
|
|
return True
|
||
|
|
except ValueError:
|
||
|
|
return False
|
||
|
|
|
||
|
|
|
||
|
|
@magics_class
|
||
|
|
class KernelMagics(Magics):
|
||
|
|
# ------------------------------------------------------------------------
|
||
|
|
# Magic overrides
|
||
|
|
# ------------------------------------------------------------------------
|
||
|
|
# Once the base class stops inheriting from magic, this code needs to be
|
||
|
|
# moved into a separate machinery as well. For now, at least isolate here
|
||
|
|
# the magics which this class needs to implement differently from the base
|
||
|
|
# class, or that are unique to it.
|
||
|
|
|
||
|
|
@line_magic
|
||
|
|
def edit(self, parameter_s="", last_call=None):
|
||
|
|
"""Bring up an editor and execute the resulting code.
|
||
|
|
|
||
|
|
Usage:
|
||
|
|
%edit [options] [args]
|
||
|
|
|
||
|
|
%edit runs an external text editor. You will need to set the command for
|
||
|
|
this editor via the ``TerminalInteractiveShell.editor`` option in your
|
||
|
|
configuration file before it will work.
|
||
|
|
|
||
|
|
This command allows you to conveniently edit multi-line code right in
|
||
|
|
your IPython session.
|
||
|
|
|
||
|
|
If called without arguments, %edit opens up an empty editor with a
|
||
|
|
temporary file and will execute the contents of this file when you
|
||
|
|
close it (don't forget to save it!).
|
||
|
|
|
||
|
|
Options:
|
||
|
|
|
||
|
|
-n <number>
|
||
|
|
Open the editor at a specified line number. By default, the IPython
|
||
|
|
editor hook uses the unix syntax 'editor +N filename', but you can
|
||
|
|
configure this by providing your own modified hook if your favorite
|
||
|
|
editor supports line-number specifications with a different syntax.
|
||
|
|
|
||
|
|
-p
|
||
|
|
Call the editor with the same data as the previous time it was used,
|
||
|
|
regardless of how long ago (in your current session) it was.
|
||
|
|
|
||
|
|
-r
|
||
|
|
Use 'raw' input. This option only applies to input taken from the
|
||
|
|
user's history. By default, the 'processed' history is used, so that
|
||
|
|
magics are loaded in their transformed version to valid Python. If
|
||
|
|
this option is given, the raw input as typed as the command line is
|
||
|
|
used instead. When you exit the editor, it will be executed by
|
||
|
|
IPython's own processor.
|
||
|
|
|
||
|
|
Arguments:
|
||
|
|
|
||
|
|
If arguments are given, the following possibilities exist:
|
||
|
|
|
||
|
|
- The arguments are numbers or pairs of colon-separated numbers (like
|
||
|
|
1 4:8 9). These are interpreted as lines of previous input to be
|
||
|
|
loaded into the editor. The syntax is the same of the %macro command.
|
||
|
|
|
||
|
|
- If the argument doesn't start with a number, it is evaluated as a
|
||
|
|
variable and its contents loaded into the editor. You can thus edit
|
||
|
|
any string which contains python code (including the result of
|
||
|
|
previous edits).
|
||
|
|
|
||
|
|
- If the argument is the name of an object (other than a string),
|
||
|
|
IPython will try to locate the file where it was defined and open the
|
||
|
|
editor at the point where it is defined. You can use ``%edit function``
|
||
|
|
to load an editor exactly at the point where 'function' is defined,
|
||
|
|
edit it and have the file be executed automatically.
|
||
|
|
|
||
|
|
If the object is a macro (see %macro for details), this opens up your
|
||
|
|
specified editor with a temporary file containing the macro's data.
|
||
|
|
Upon exit, the macro is reloaded with the contents of the file.
|
||
|
|
|
||
|
|
Note: opening at an exact line is only supported under Unix, and some
|
||
|
|
editors (like kedit and gedit up to Gnome 2.8) do not understand the
|
||
|
|
'+NUMBER' parameter necessary for this feature. Good editors like
|
||
|
|
(X)Emacs, vi, jed, pico and joe all do.
|
||
|
|
|
||
|
|
- If the argument is not found as a variable, IPython will look for a
|
||
|
|
file with that name (adding .py if necessary) and load it into the
|
||
|
|
editor. It will execute its contents with execfile() when you exit,
|
||
|
|
loading any code in the file into your interactive namespace.
|
||
|
|
|
||
|
|
Unlike in the terminal, this is designed to use a GUI editor, and we do
|
||
|
|
not know when it has closed. So the file you edit will not be
|
||
|
|
automatically executed or printed.
|
||
|
|
|
||
|
|
Note that %edit is also available through the alias %ed.
|
||
|
|
"""
|
||
|
|
last_call = last_call or ["", ""]
|
||
|
|
opts, args = self.parse_options(parameter_s, "prn:")
|
||
|
|
|
||
|
|
try:
|
||
|
|
filename, lineno, _ = CodeMagics._find_edit_target(self.shell, args, opts, last_call)
|
||
|
|
except MacroToEdit:
|
||
|
|
# TODO: Implement macro editing over 2 processes.
|
||
|
|
print("Macro editing not yet implemented in 2-process model.")
|
||
|
|
return
|
||
|
|
|
||
|
|
# Make sure we send to the client an absolute path, in case the working
|
||
|
|
# directory of client and kernel don't match
|
||
|
|
filename = os.path.abspath(filename)
|
||
|
|
|
||
|
|
payload = {"source": "edit_magic", "filename": filename, "line_number": lineno}
|
||
|
|
self.shell.payload_manager.write_payload(payload)
|
||
|
|
|
||
|
|
# A few magics that are adapted to the specifics of using pexpect and a
|
||
|
|
# remote terminal
|
||
|
|
|
||
|
|
@line_magic
|
||
|
|
def clear(self, arg_s):
|
||
|
|
"""Clear the terminal."""
|
||
|
|
if os.name == "posix":
|
||
|
|
self.shell.system("clear")
|
||
|
|
else:
|
||
|
|
self.shell.system("cls")
|
||
|
|
|
||
|
|
if os.name == "nt":
|
||
|
|
# This is the usual name in windows
|
||
|
|
cls = line_magic("cls")(clear)
|
||
|
|
|
||
|
|
# Terminal pagers won't work over pexpect, but we do have our own pager
|
||
|
|
|
||
|
|
@line_magic
|
||
|
|
def less(self, arg_s):
|
||
|
|
"""Show a file through the pager.
|
||
|
|
|
||
|
|
Files ending in .py are syntax-highlighted."""
|
||
|
|
if not arg_s:
|
||
|
|
raise UsageError("Missing filename.")
|
||
|
|
|
||
|
|
if arg_s.endswith(".py"):
|
||
|
|
cont = self.shell.pycolorize(openpy.read_py_file(arg_s, skip_encoding_cookie=False))
|
||
|
|
else:
|
||
|
|
with open(arg_s) as fid:
|
||
|
|
cont = fid.read()
|
||
|
|
page.page(cont)
|
||
|
|
|
||
|
|
more = line_magic("more")(less)
|
||
|
|
|
||
|
|
# Man calls a pager, so we also need to redefine it
|
||
|
|
if os.name == "posix":
|
||
|
|
|
||
|
|
@line_magic
|
||
|
|
def man(self, arg_s):
|
||
|
|
"""Find the man page for the given command and display in pager."""
|
||
|
|
page.page(self.shell.getoutput("man %s | col -b" % arg_s, split=False))
|
||
|
|
|
||
|
|
@line_magic
|
||
|
|
def connect_info(self, arg_s):
|
||
|
|
"""Print information for connecting other clients to this kernel
|
||
|
|
|
||
|
|
It will print the contents of this session's connection file, as well as
|
||
|
|
shortcuts for local clients.
|
||
|
|
|
||
|
|
In the simplest case, when called from the most recently launched kernel,
|
||
|
|
secondary clients can be connected, simply with:
|
||
|
|
|
||
|
|
$> jupyter <app> --existing
|
||
|
|
|
||
|
|
"""
|
||
|
|
|
||
|
|
try:
|
||
|
|
connection_file = get_connection_file()
|
||
|
|
info = get_connection_info(unpack=False)
|
||
|
|
except Exception as e:
|
||
|
|
warnings.warn("Could not get connection info: %r" % e)
|
||
|
|
return
|
||
|
|
|
||
|
|
# if it's in the default dir, truncate to basename
|
||
|
|
if jupyter_runtime_dir() == os.path.dirname(connection_file):
|
||
|
|
connection_file = os.path.basename(connection_file)
|
||
|
|
|
||
|
|
print(info + "\n")
|
||
|
|
print(
|
||
|
|
f"Paste the above JSON into a file, and connect with:\n"
|
||
|
|
f" $> jupyter <app> --existing <file>\n"
|
||
|
|
f"or, if you are local, you can connect with just:\n"
|
||
|
|
f" $> jupyter <app> --existing {connection_file}\n"
|
||
|
|
f"or even just:\n"
|
||
|
|
f" $> jupyter <app> --existing\n"
|
||
|
|
f"if this is the most recent Jupyter kernel you have started."
|
||
|
|
)
|
||
|
|
|
||
|
|
@line_magic
|
||
|
|
def qtconsole(self, arg_s):
|
||
|
|
"""Open a qtconsole connected to this kernel.
|
||
|
|
|
||
|
|
Useful for connecting a qtconsole to running notebooks, for better
|
||
|
|
debugging.
|
||
|
|
"""
|
||
|
|
|
||
|
|
# %qtconsole should imply bind_kernel for engines:
|
||
|
|
# FIXME: move to ipyparallel Kernel subclass
|
||
|
|
if "ipyparallel" in sys.modules:
|
||
|
|
from ipyparallel import bind_kernel
|
||
|
|
|
||
|
|
bind_kernel()
|
||
|
|
|
||
|
|
try:
|
||
|
|
connect_qtconsole(argv=arg_split(arg_s, os.name == "posix"))
|
||
|
|
except Exception as e:
|
||
|
|
warnings.warn("Could not start qtconsole: %r" % e)
|
||
|
|
return
|
||
|
|
|
||
|
|
@line_magic
|
||
|
|
def autosave(self, arg_s):
|
||
|
|
"""Set the autosave interval in the notebook (in seconds).
|
||
|
|
|
||
|
|
The default value is 120, or two minutes.
|
||
|
|
``%autosave 0`` will disable autosave.
|
||
|
|
|
||
|
|
This magic only has an effect when called from the notebook interface.
|
||
|
|
It has no effect when called in a startup file.
|
||
|
|
"""
|
||
|
|
|
||
|
|
try:
|
||
|
|
interval = int(arg_s)
|
||
|
|
except ValueError as e:
|
||
|
|
raise UsageError("%%autosave requires an integer, got %r" % arg_s) from e
|
||
|
|
|
||
|
|
# javascript wants milliseconds
|
||
|
|
milliseconds = 1000 * interval
|
||
|
|
display(
|
||
|
|
Javascript("IPython.notebook.set_autosave_interval(%i)" % milliseconds),
|
||
|
|
include=["application/javascript"],
|
||
|
|
)
|
||
|
|
if interval:
|
||
|
|
print("Autosaving every %i seconds" % interval)
|
||
|
|
else:
|
||
|
|
print("Autosave disabled")
|
||
|
|
|
||
|
|
|
||
|
|
class ZMQInteractiveShell(InteractiveShell):
|
||
|
|
"""A subclass of InteractiveShell for ZMQ."""
|
||
|
|
|
||
|
|
displayhook_class = Type(ZMQShellDisplayHook)
|
||
|
|
display_pub_class = Type(ZMQDisplayPublisher)
|
||
|
|
data_pub_class = Any()
|
||
|
|
kernel = Any()
|
||
|
|
parent_header = Any()
|
||
|
|
|
||
|
|
@default("banner1")
|
||
|
|
def _default_banner1(self):
|
||
|
|
return default_banner
|
||
|
|
|
||
|
|
# Override the traitlet in the parent class, because there's no point using
|
||
|
|
# readline for the kernel. Can be removed when the readline code is moved
|
||
|
|
# to the terminal frontend.
|
||
|
|
readline_use = CBool(False)
|
||
|
|
# autoindent has no meaning in a zmqshell, and attempting to enable it
|
||
|
|
# will print a warning in the absence of readline.
|
||
|
|
autoindent = CBool(False)
|
||
|
|
|
||
|
|
exiter = Instance(ZMQExitAutocall)
|
||
|
|
|
||
|
|
@default("exiter")
|
||
|
|
def _default_exiter(self):
|
||
|
|
return ZMQExitAutocall(self)
|
||
|
|
|
||
|
|
@observe("exit_now")
|
||
|
|
def _update_exit_now(self, change):
|
||
|
|
"""stop eventloop when exit_now fires"""
|
||
|
|
if change["new"]:
|
||
|
|
if hasattr(self.kernel, "io_loop"):
|
||
|
|
loop = self.kernel.io_loop
|
||
|
|
loop.call_later(0.1, loop.stop)
|
||
|
|
if self.kernel.eventloop:
|
||
|
|
exit_hook = getattr(self.kernel.eventloop, "exit_hook", None)
|
||
|
|
if exit_hook:
|
||
|
|
exit_hook(self.kernel)
|
||
|
|
|
||
|
|
keepkernel_on_exit = None
|
||
|
|
|
||
|
|
# Over ZeroMQ, GUI control isn't done with PyOS_InputHook as there is no
|
||
|
|
# interactive input being read; we provide event loop support in ipkernel
|
||
|
|
def enable_gui(self, gui):
|
||
|
|
from .eventloops import enable_gui as real_enable_gui
|
||
|
|
|
||
|
|
try:
|
||
|
|
real_enable_gui(gui)
|
||
|
|
self.active_eventloop = gui
|
||
|
|
except ValueError as e:
|
||
|
|
raise UsageError("%s" % e) from e
|
||
|
|
|
||
|
|
def init_environment(self):
|
||
|
|
"""Configure the user's environment."""
|
||
|
|
env = os.environ
|
||
|
|
# These two ensure 'ls' produces nice coloring on BSD-derived systems
|
||
|
|
env["TERM"] = "xterm-color"
|
||
|
|
env["CLICOLOR"] = "1"
|
||
|
|
# These two add terminal color in tools that support it.
|
||
|
|
env["FORCE_COLOR"] = "1"
|
||
|
|
env["CLICOLOR_FORCE"] = "1"
|
||
|
|
# Since normal pagers don't work at all (over pexpect we don't have
|
||
|
|
# single-key control of the subprocess), try to disable paging in
|
||
|
|
# subprocesses as much as possible.
|
||
|
|
env["PAGER"] = "cat"
|
||
|
|
env["GIT_PAGER"] = "cat"
|
||
|
|
|
||
|
|
def init_hooks(self):
|
||
|
|
super().init_hooks()
|
||
|
|
self.set_hook("show_in_pager", page.as_hook(payloadpage.page), 99)
|
||
|
|
|
||
|
|
def init_data_pub(self):
|
||
|
|
"""Delay datapub init until request, for deprecation warnings"""
|
||
|
|
pass
|
||
|
|
|
||
|
|
@property
|
||
|
|
def data_pub(self):
|
||
|
|
if not hasattr(self, "_data_pub"):
|
||
|
|
warnings.warn(
|
||
|
|
"InteractiveShell.data_pub is deprecated outside IPython parallel.",
|
||
|
|
DeprecationWarning,
|
||
|
|
stacklevel=2,
|
||
|
|
)
|
||
|
|
|
||
|
|
self._data_pub = self.data_pub_class(parent=self)
|
||
|
|
self._data_pub.session = self.display_pub.session
|
||
|
|
self._data_pub.pub_socket = self.display_pub.pub_socket
|
||
|
|
return self._data_pub
|
||
|
|
|
||
|
|
@data_pub.setter
|
||
|
|
def data_pub(self, pub):
|
||
|
|
self._data_pub = pub
|
||
|
|
|
||
|
|
def ask_exit(self):
|
||
|
|
"""Engage the exit actions."""
|
||
|
|
self.exit_now = not self.keepkernel_on_exit
|
||
|
|
payload = dict(
|
||
|
|
source="ask_exit",
|
||
|
|
keepkernel=self.keepkernel_on_exit,
|
||
|
|
)
|
||
|
|
self.payload_manager.write_payload(payload)
|
||
|
|
|
||
|
|
def run_cell(self, *args, **kwargs):
|
||
|
|
self._last_traceback = None
|
||
|
|
return super().run_cell(*args, **kwargs)
|
||
|
|
|
||
|
|
def _showtraceback(self, etype, evalue, stb):
|
||
|
|
# try to preserve ordering of tracebacks and print statements
|
||
|
|
sys.stdout.flush()
|
||
|
|
sys.stderr.flush()
|
||
|
|
|
||
|
|
exc_content = {
|
||
|
|
"traceback": stb,
|
||
|
|
"ename": str(etype.__name__),
|
||
|
|
"evalue": str(evalue),
|
||
|
|
}
|
||
|
|
|
||
|
|
dh = self.displayhook
|
||
|
|
# Send exception info over pub socket for other clients than the caller
|
||
|
|
# to pick up
|
||
|
|
topic = None
|
||
|
|
if dh.topic:
|
||
|
|
topic = dh.topic.replace(b"execute_result", b"error")
|
||
|
|
|
||
|
|
dh.session.send(
|
||
|
|
dh.pub_socket,
|
||
|
|
"error",
|
||
|
|
json_clean(exc_content),
|
||
|
|
dh.parent_header,
|
||
|
|
ident=topic,
|
||
|
|
)
|
||
|
|
|
||
|
|
# FIXME - Once we rely on Python 3, the traceback is stored on the
|
||
|
|
# exception object, so we shouldn't need to store it here.
|
||
|
|
self._last_traceback = stb
|
||
|
|
|
||
|
|
def set_next_input(self, text, replace=False):
|
||
|
|
"""Send the specified text to the frontend to be presented at the next
|
||
|
|
input cell."""
|
||
|
|
payload = dict(
|
||
|
|
source="set_next_input",
|
||
|
|
text=text,
|
||
|
|
replace=replace,
|
||
|
|
)
|
||
|
|
self.payload_manager.write_payload(payload)
|
||
|
|
|
||
|
|
def set_parent(self, parent):
|
||
|
|
"""Set the parent header for associating output with its triggering input"""
|
||
|
|
self.parent_header = parent
|
||
|
|
self.displayhook.set_parent(parent)
|
||
|
|
self.display_pub.set_parent(parent)
|
||
|
|
if hasattr(self, "_data_pub"):
|
||
|
|
self.data_pub.set_parent(parent)
|
||
|
|
try:
|
||
|
|
sys.stdout.set_parent(parent) # type:ignore[attr-defined]
|
||
|
|
except AttributeError:
|
||
|
|
pass
|
||
|
|
try:
|
||
|
|
sys.stderr.set_parent(parent) # type:ignore[attr-defined]
|
||
|
|
except AttributeError:
|
||
|
|
pass
|
||
|
|
|
||
|
|
def get_parent(self):
|
||
|
|
return self.parent_header
|
||
|
|
|
||
|
|
def init_magics(self):
|
||
|
|
super().init_magics()
|
||
|
|
self.register_magics(KernelMagics)
|
||
|
|
self.magics_manager.register_alias("ed", "edit")
|
||
|
|
|
||
|
|
def init_virtualenv(self):
|
||
|
|
# Overridden not to do virtualenv detection, because it's probably
|
||
|
|
# not appropriate in a kernel. To use a kernel in a virtualenv, install
|
||
|
|
# it inside the virtualenv.
|
||
|
|
# https://ipython.readthedocs.io/en/latest/install/kernel_install.html
|
||
|
|
pass
|
||
|
|
|
||
|
|
def system_piped(self, cmd):
|
||
|
|
"""Call the given cmd in a subprocess, piping stdout/err
|
||
|
|
|
||
|
|
Parameters
|
||
|
|
----------
|
||
|
|
cmd : str
|
||
|
|
Command to execute (can not end in '&', as background processes are
|
||
|
|
not supported. Should not be a command that expects input
|
||
|
|
other than simple text.
|
||
|
|
"""
|
||
|
|
if cmd.rstrip().endswith("&"):
|
||
|
|
# this is *far* from a rigorous test
|
||
|
|
# We do not support backgrounding processes because we either use
|
||
|
|
# pexpect or pipes to read from. Users can always just call
|
||
|
|
# os.system() or use ip.system=ip.system_raw
|
||
|
|
# if they really want a background process.
|
||
|
|
raise OSError("Background processes not supported.")
|
||
|
|
|
||
|
|
# we explicitly do NOT return the subprocess status code, because
|
||
|
|
# a non-None value would trigger :func:`sys.displayhook` calls.
|
||
|
|
# Instead, we store the exit_code in user_ns.
|
||
|
|
# Also, protect system call from UNC paths on Windows here too
|
||
|
|
# as is done in InteractiveShell.system_raw
|
||
|
|
if sys.platform == "win32":
|
||
|
|
cmd = self.var_expand(cmd, depth=1)
|
||
|
|
from IPython.utils._process_win32 import AvoidUNCPath
|
||
|
|
|
||
|
|
with AvoidUNCPath() as path:
|
||
|
|
if path is not None:
|
||
|
|
cmd = f"pushd {path} &&{cmd}"
|
||
|
|
self.user_ns["_exit_code"] = system(cmd)
|
||
|
|
else:
|
||
|
|
self.user_ns["_exit_code"] = system(self.var_expand(cmd, depth=1))
|
||
|
|
|
||
|
|
# Ensure new system_piped implementation is used
|
||
|
|
system = system_piped
|
||
|
|
|
||
|
|
|
||
|
|
InteractiveShellABC.register(ZMQInteractiveShell)
|