Forest <[email protected]> added the comment:
Here's another working example, allowing alternate separator strings (as
requested in #33389) via subclassing:
class OneMetavarHelpFormatter(argparse.HelpFormatter):
"""A formatter that avoids repeating action metavars.
"""
OPTION_SEPARATOR = ', '
METAVAR_SEPARATOR = ' '
def _format_action_invocation(self, action):
"""Format action help without repeating the argument metavar
"""
if not action.option_strings or action.nargs == 0:
return super()._format_action_invocation(action)
default = self._get_default_metavar_for_optional(action)
args_string = self._format_args(action, default)
options_string = self.OPTION_SEPARATOR.join(action.option_strings)
return options_string + self.METAVAR_SEPARATOR + args_string
----------
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Python tracker <[email protected]>
<https://bugs.python.org/issue45110>
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