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- from pip.req import InstallRequirement, RequirementSet, parse_requirements
- from pip.basecommand import Command
- from pip.exceptions import InstallationError
- 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] <package> ...
- %prog [options] -r <requirements file> ..."""
- 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):
- session = self._build_session(options)
- requirement_set = RequirementSet(
- build_dir=None,
- src_dir=None,
- download_dir=None,
- session=session,
- )
- for name in args:
- requirement_set.add_requirement(
- InstallRequirement.from_line(name))
- for filename in options.requirements:
- for req in parse_requirements(filename,
- options=options, session=session):
- requirement_set.add_requirement(req)
- if not requirement_set.has_requirements:
- raise InstallationError('You must give at least one requirement '
- 'to %(name)s (see "pip help %(name)s")' % dict(name=self.name))
- requirement_set.uninstall(auto_confirm=options.yes)
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