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annotate venv/lib/python2.7/site-packages/pip/commands/uninstall.py @ 0:d67268158946 draft

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planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
author bcclaywell
date Mon, 12 Oct 2015 17:43:33 -0400
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1 from __future__ import absolute_import
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2
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3 from pip.req import InstallRequirement, RequirementSet, parse_requirements
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4 from pip.basecommand import Command
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5 from pip.exceptions import InstallationError
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6
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7
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8 class UninstallCommand(Command):
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9 """
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10 Uninstall packages.
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11
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12 pip is able to uninstall most installed packages. Known exceptions are:
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13
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14 - Pure distutils packages installed with ``python setup.py install``, which
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15 leave behind no metadata to determine what files were installed.
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16 - Script wrappers installed by ``python setup.py develop``.
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17 """
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18 name = 'uninstall'
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19 usage = """
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20 %prog [options] <package> ...
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21 %prog [options] -r <requirements file> ..."""
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22 summary = 'Uninstall packages.'
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23
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24 def __init__(self, *args, **kw):
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25 super(UninstallCommand, self).__init__(*args, **kw)
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26 self.cmd_opts.add_option(
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27 '-r', '--requirement',
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28 dest='requirements',
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29 action='append',
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30 default=[],
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31 metavar='file',
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32 help='Uninstall all the packages listed in the given requirements '
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33 'file. This option can be used multiple times.',
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34 )
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35 self.cmd_opts.add_option(
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36 '-y', '--yes',
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37 dest='yes',
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38 action='store_true',
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39 help="Don't ask for confirmation of uninstall deletions.")
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40
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41 self.parser.insert_option_group(0, self.cmd_opts)
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42
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43 def run(self, options, args):
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44 with self._build_session(options) as session:
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45
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46 requirement_set = RequirementSet(
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47 build_dir=None,
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48 src_dir=None,
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49 download_dir=None,
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50 isolated=options.isolated_mode,
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51 session=session,
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52 )
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53 for name in args:
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54 requirement_set.add_requirement(
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55 InstallRequirement.from_line(
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56 name, isolated=options.isolated_mode,
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57 )
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58 )
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59 for filename in options.requirements:
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60 for req in parse_requirements(
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61 filename,
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62 options=options,
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63 session=session):
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64 requirement_set.add_requirement(req)
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65 if not requirement_set.has_requirements:
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66 raise InstallationError(
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67 'You must give at least one requirement to %(name)s (see '
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68 '"pip help %(name)s")' % dict(name=self.name)
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69 )
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70 requirement_set.uninstall(auto_confirm=options.yes)