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annotate planemo/lib/python3.7/site-packages/pip/_internal/commands/uninstall.py @ 1:56ad4e20f292 draft

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"planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
author guerler
date Fri, 31 Jul 2020 00:32:28 -0400
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1 from __future__ import absolute_import
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2
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3 from pip._vendor.packaging.utils import canonicalize_name
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4
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5 from pip._internal.cli.base_command import Command
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6 from pip._internal.exceptions import InstallationError
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7 from pip._internal.req import parse_requirements
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8 from pip._internal.req.constructors import install_req_from_line
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9 from pip._internal.utils.misc import protect_pip_from_modification_on_windows
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10
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11
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12 class UninstallCommand(Command):
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13 """
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14 Uninstall packages.
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15
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16 pip is able to uninstall most installed packages. Known exceptions are:
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17
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18 - Pure distutils packages installed with ``python setup.py install``, which
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19 leave behind no metadata to determine what files were installed.
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20 - Script wrappers installed by ``python setup.py develop``.
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21 """
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22 name = 'uninstall'
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23 usage = """
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24 %prog [options] <package> ...
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25 %prog [options] -r <requirements file> ..."""
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26 summary = 'Uninstall packages.'
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27
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28 def __init__(self, *args, **kw):
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29 super(UninstallCommand, self).__init__(*args, **kw)
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30 self.cmd_opts.add_option(
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31 '-r', '--requirement',
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32 dest='requirements',
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33 action='append',
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34 default=[],
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35 metavar='file',
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36 help='Uninstall all the packages listed in the given requirements '
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37 'file. This option can be used multiple times.',
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38 )
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39 self.cmd_opts.add_option(
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40 '-y', '--yes',
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41 dest='yes',
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42 action='store_true',
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43 help="Don't ask for confirmation of uninstall deletions.")
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44
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45 self.parser.insert_option_group(0, self.cmd_opts)
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46
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47 def run(self, options, args):
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48 with self._build_session(options) as session:
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49 reqs_to_uninstall = {}
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50 for name in args:
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51 req = install_req_from_line(
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52 name, isolated=options.isolated_mode,
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53 )
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54 if req.name:
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55 reqs_to_uninstall[canonicalize_name(req.name)] = req
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56 for filename in options.requirements:
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57 for req in parse_requirements(
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58 filename,
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59 options=options,
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60 session=session):
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61 if req.name:
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62 reqs_to_uninstall[canonicalize_name(req.name)] = req
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63 if not reqs_to_uninstall:
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64 raise InstallationError(
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65 'You must give at least one requirement to %(name)s (see '
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66 '"pip help %(name)s")' % dict(name=self.name)
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67 )
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68
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69 protect_pip_from_modification_on_windows(
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70 modifying_pip="pip" in reqs_to_uninstall
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71 )
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72
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73 for req in reqs_to_uninstall.values():
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74 uninstall_pathset = req.uninstall(
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75 auto_confirm=options.yes, verbose=self.verbosity > 0,
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76 )
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77 if uninstall_pathset:
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78 uninstall_pathset.commit()