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from __future__ import absolute_import

from pip._internal.cli.base_command import Command
from pip._internal.cli.status_codes import SUCCESS
from pip._internal.exceptions import CommandError
from pip._internal.utils.typing import MYPY_CHECK_RUNNING

if MYPY_CHECK_RUNNING:
    from typing import List
    from optparse import Values


class HelpCommand(Command):
    """Show help for commands"""

    usage = """
      %prog <command>"""
    ignore_require_venv = True

    def run(self, options, args):
        # type: (Values, List[str]) -> int
        from pip._internal.commands import (
            commands_dict, create_command, get_similar_commands,
        )

        try:
            # 'pip help' with no args is handled by pip.__init__.parseopt()
            cmd_name = args[0]  # the command we need help for
        except IndexError:
            return SUCCESS

        if cmd_name not in commands_dict:
            guess = get_similar_commands(cmd_name)

            msg = ['unknown command "{}"'.format(cmd_name)]
            if guess:
                msg.append('maybe you meant "{}"'.format(guess))

            raise CommandError(' - '.join(msg))

        command = create_command(cmd_name)
        command.parser.print_help()

        return SUCCESS

Filemanager

Name Type Size Permission Actions
__pycache__ Folder 2755
__init__.py File 4 KB 0644
cache.py File 5.54 KB 0644
check.py File 1.64 KB 0644
completion.py File 3.01 KB 0644
configuration.py File 9.13 KB 0644
debug.py File 7.14 KB 0644
download.py File 4.8 KB 0644
freeze.py File 3.37 KB 0644
hash.py File 1.8 KB 0644
help.py File 1.24 KB 0644
install.py File 27.34 KB 0644
list.py File 11.05 KB 0644
search.py File 5.62 KB 0644
show.py File 6.83 KB 0644
uninstall.py File 3.23 KB 0644
wheel.py File 6.27 KB 0644