/usr/lib/python2.7/dist-packages/argh/utils.py is in python-argh 0.25.0-1.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 | # coding: utf-8
#
# Copyright © 2010—2014 Andrey Mikhaylenko and contributors
#
# This file is part of Argh.
#
# Argh is free software under terms of the GNU Lesser
# General Public License version 3 (LGPLv3) as published by the Free
# Software Foundation. See the file README.rst for copying conditions.
#
"""
Utilities
~~~~~~~~~
"""
import argparse
import inspect
from argh import compat
def get_subparsers(parser, create=False):
"""
Returns the :class:`argparse._SubParsersAction` instance for given
:class:`ArgumentParser` instance as would have been returned by
:meth:`ArgumentParser.add_subparsers`. The problem with the latter is that
it only works once and raises an exception on the second attempt, and the
public API seems to lack a method to get *existing* subparsers.
:param create:
If `True`, creates the subparser if it does not exist. Default if
`False`.
"""
# note that ArgumentParser._subparsers is *not* what is returned by
# ArgumentParser.add_subparsers().
if parser._subparsers:
actions = [a for a in parser._actions
if isinstance(a, argparse._SubParsersAction)]
assert len(actions) == 1
return actions[0]
else:
if create:
return parser.add_subparsers()
def get_arg_spec(function):
"""
Returns argument specification for given function. Omits special
arguments of instance methods (`self`) and static methods (usually `cls`
or something like this).
"""
spec = compat.getargspec(function)
if inspect.ismethod(function):
spec = spec._replace(args=spec.args[1:])
return spec
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