def get_parser(self, prog_name):
"""Return an :class:`argparse.ArgumentParser`.
"""
parser = _argparse.ArgumentParser(
description=self.get_description(),
epilog=self.get_epilog(),
prog=prog_name,
formatter_class=_SmartHelpFormatter,
)
for hook in self._hooks:
hook.obj.get_parser(parser)
return parser
def build_option_parser(self, description, version, argparse_kwargs=None):
"""Return an argparse option parser for this application.
Subclasses may override this method to extend
the parser with more global options.
:param description: full description of the application
:paramtype description: str
:param version: version number for the application
:paramtype version: str
:param argparse_kwargs: extra keyword argument passed to the
ArgumentParser constructor
:paramtype extra_kwargs: dict
"""
argparse_kwargs = argparse_kwargs or {}
parser = _argparse.ArgumentParser(description=description,
add_help=False,
**argparse_kwargs)
parser.add_argument(
'--version',
action='version',
version='%(prog)s {0}'.format(version),
)
verbose_group = parser.add_mutually_exclusive_group()
verbose_group.add_argument(
'-v',
'--verbose',
action='count',
dest='verbose_level',
default=self.DEFAULT_VERBOSE_LEVEL,
help='Increase verbosity of output. Can be repeated.',
)
verbose_group.add_argument(
'-q',
'--quiet',
action='store_const',
dest='verbose_level',
const=0,
help='Suppress output except warnings and errors.',
)
parser.add_argument(
'--log-file',
action='store',
default=None,
help='Specify a file to log output. Disabled by default.',
)
if self.deferred_help:
parser.add_argument(
'-h',
'--help',
dest='deferred_help',
action='store_true',
help="Show help message and exit.",
)
else:
parser.add_argument(
'-h',
'--help',
action=help.HelpAction,
nargs=0,
default=self, # tricky
help="Show help message and exit.",
)
parser.add_argument(
'--debug',
default=False,
action='store_true',
help='Show tracebacks on errors.',
)
return parser
def test_argument_parser_add_nested_group(self):
parser = _argparse.ArgumentParser(conflict_handler='ignore')
group = parser.add_argument_group()
group.add_argument_group()
def test_argument_parser_add_mx_nested_mutually_exclusive_group(self):
parser = _argparse.ArgumentParser(conflict_handler='ignore')
group = parser.add_mutually_exclusive_group()
group.add_mutually_exclusive_group()
def test_argument_parser(self):
_argparse.ArgumentParser(conflict_handler='ignore')
