from __future__ import absolute_import from pip._vendor.packaging.utils import canonicalize_name from pip._internal.basecommand import Command from pip._internal.exceptions import InstallationError from pip._internal.req import InstallRequirement, parse_requirements class UninstallCommand(Command): """ 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``. """ name = 'uninstall' usage = """ %prog [options] ... %prog [options] -r ...""" summary = 'Uninstall packages.' def __init__(self, *args, **kw): super(UninstallCommand, self).__init__(*args, **kw) 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): with self._build_session(options) as session: reqs_to_uninstall = {} for name in args: req = InstallRequirement.from_line( name, isolated=options.isolated_mode, ) if req.name: reqs_to_uninstall[canonicalize_name(req.name)] = req for filename in options.requirements: for req in parse_requirements( filename, options=options, session=session): 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 %(name)s (see ' '"pip help %(name)s")' % dict(name=self.name) ) 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()