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annotate planemo/lib/python3.7/site-packages/pip/_internal/commands/help.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._internal.cli.base_command import Command
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4 from pip._internal.cli.status_codes import SUCCESS
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5 from pip._internal.exceptions import CommandError
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8 class HelpCommand(Command):
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9 """Show help for commands"""
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10 name = 'help'
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11 usage = """
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12 %prog <command>"""
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13 summary = 'Show help for commands.'
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14 ignore_require_venv = True
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16 def run(self, options, args):
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17 from pip._internal.commands import commands_dict, get_similar_commands
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18
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19 try:
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20 # 'pip help' with no args is handled by pip.__init__.parseopt()
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21 cmd_name = args[0] # the command we need help for
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22 except IndexError:
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23 return SUCCESS
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25 if cmd_name not in commands_dict:
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26 guess = get_similar_commands(cmd_name)
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28 msg = ['unknown command "%s"' % cmd_name]
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29 if guess:
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30 msg.append('maybe you meant "%s"' % guess)
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32 raise CommandError(' - '.join(msg))
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34 command = commands_dict[cmd_name]()
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35 command.parser.print_help()
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37 return SUCCESS