from __future__ import absolute_import from pip._vendor.packaging.utils import canonicalize_name from pip._internal.cli.base_command import Command from pip._internal.cli.req_command import SessionCommandMixin from pip._internal.cli.status_codes import SUCCESS from pip._internal.exceptions import InstallationError from pip._internal.req import parse_requirements from pip._internal.req.constructors import ( install_req_from_line, install_req_from_parsed_requirement, ) from pip._internal.utils.misc import protect_pip_from_modification_on_windows from pip._internal.utils.typing import MYPY_CHECK_RUNNING if MYPY_CHECK_RUNNING: from optparse import Values from typing import List class UninstallCommand(Command, SessionCommandMixin): """ Uninstall packages. pip is able to uninstall most installed packages. Known exceptions are: - Pure distutils packages installed with ``python setup.py install``, which leave behind no metadata to determine what files were installed. - Script wrappers installed by ``python setup.py develop``. """ usage = """ %prog [options] ... %prog [options] -r ...""" def add_options(self): # type: () -> None self.cmd_opts.add_option( '-r', '--requirement', dest='requirements', action='append', default=[], metavar='file', help='Uninstall all the packages listed in the given requirements ' 'file. This option can be used multiple times.', ) self.cmd_opts.add_option( '-y', '--yes', dest='yes', action='store_true', help="Don't ask for confirmation of uninstall deletions.") self.parser.insert_option_group(0, self.cmd_opts) def run(self, options, args): # type: (Values, List[str]) -> int session = self.get_default_session(options) reqs_to_uninstall = {} for name in args: req = install_req_from_line( name, isolated=options.isolated_mode, ) if req.name: reqs_to_uninstall[canonicalize_name(req.name)] = req for filename in options.requirements: for parsed_req in parse_requirements( filename, options=options, session=session): req = install_req_from_parsed_requirement( parsed_req, isolated=options.isolated_mode ) if req.name: reqs_to_uninstall[canonicalize_name(req.name)] = req if not reqs_to_uninstall: raise InstallationError( 'You must give at least one requirement to {self.name} (see ' '"pip help {self.name}")'.format(**locals()) ) protect_pip_from_modification_on_windows( modifying_pip="pip" in reqs_to_uninstall ) for req in reqs_to_uninstall.values(): uninstall_pathset = req.uninstall( auto_confirm=options.yes, verbose=self.verbosity > 0, ) if uninstall_pathset: uninstall_pathset.commit() return SUCCESS