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42 lines
1.1 KiB
42 lines
1.1 KiB
3 years ago
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from optparse import Values
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from typing import List
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from pip._internal.cli.base_command import Command
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from pip._internal.cli.status_codes import SUCCESS
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from pip._internal.exceptions import CommandError
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class HelpCommand(Command):
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"""Show help for commands"""
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usage = """
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%prog <command>"""
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ignore_require_venv = True
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def run(self, options: Values, args: List[str]) -> int:
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from pip._internal.commands import (
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commands_dict,
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create_command,
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get_similar_commands,
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)
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try:
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# 'pip help' with no args is handled by pip.__init__.parseopt()
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cmd_name = args[0] # the command we need help for
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except IndexError:
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return SUCCESS
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if cmd_name not in commands_dict:
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guess = get_similar_commands(cmd_name)
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msg = [f'unknown command "{cmd_name}"']
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if guess:
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msg.append(f'maybe you meant "{guess}"')
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raise CommandError(" - ".join(msg))
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command = create_command(cmd_name)
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command.parser.print_help()
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return SUCCESS
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