def GetArgparseBuiltInAction(action):
"""Get an argparse.Action from a string.
This function takes one of the supplied argparse.Action strings (see below)
and returns the corresponding argparse.Action class.
This "work around" is (e.g. hack) is necessary due to the fact these required
action mappings are only exposed through subclasses of
argparse._ActionsContainer as opposed to a static function or global variable.
Args:
action: string, one of the following supplied argparse.Action names:
'store', 'store_const', 'store_false', 'append', 'append_const', 'count',
'version', 'parsers'.
Returns:
argparse.Action, the action class to use.
Raises:
ValueError: For unknown action string.
"""
# pylint:disable=protected-access
# Disabling lint check to access argparse._ActionsContainer
dummy_actions_container = argparse._ActionsContainer(
description=None,
prefix_chars=None,
argument_default=None,
conflict_handler='error')
action_cls = dummy_actions_container._registry_get('action', action)
if action_cls is None:
raise ValueError('unknown action "{0}"'.format(action_cls))
return action_cls
def GetArgparseBuiltInAction(action):
"""Get an argparse.Action from a string.
This function takes one of the supplied argparse.Action strings (see below)
and returns the corresponding argparse.Action class.
This "work around" is (e.g. hack) is necessary due to the fact these required
action mappings are only exposed through subclasses of
argparse._ActionsContainer as opposed to a static function or global variable.
Args:
action: string, one of the following supplied argparse.Action names:
'store', 'store_const', 'store_false', 'append', 'append_const', 'count',
'version', 'parsers'.
Returns:
argparse.Action, the action class to use.
Raises:
ValueError: For unknown action string.
"""
# pylint:disable=protected-access
# Disabling lint check to access argparse._ActionsContainer
dummy_actions_container = argparse._ActionsContainer(description=None,
prefix_chars=None,
argument_default=None,
conflict_handler='error')
action_cls = dummy_actions_container._registry_get('action', action)
if action_cls is None:
raise ValueError('unknown action "{0}"'.format(action))
return action_cls
