| from optparse import Values |
| from typing import List |
| |
| from pip._internal.cli.base_command import Command |
| from pip._internal.cli.status_codes import SUCCESS |
| from pip._internal.exceptions import CommandError |
| |
| |
| class HelpCommand(Command): |
| """Show help for commands""" |
| |
| usage = """ |
| %prog <command>""" |
| ignore_require_venv = True |
| |
| def run(self, options: Values, args: 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 = [f'unknown command "{cmd_name}"'] |
| if guess: |
| msg.append(f'maybe you meant "{guess}"') |
| |
| raise CommandError(" - ".join(msg)) |
| |
| command = create_command(cmd_name) |
| command.parser.print_help() |
| |
| return SUCCESS |
