mirror of https://github.com/pypa/pip
47 lines
1.3 KiB
Python
47 lines
1.3 KiB
Python
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 optparse import Values
|
|
from typing import List
|
|
|
|
|
|
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
|