Module epiclass.argparseutils.DefaultHelpParser

Slightly modify argparse to print help on any error.

Classes

class DefaultHelpParser (prog=None, usage=None, description=None, epilog=None, parents=[], formatter_class=argparse.HelpFormatter, prefix_chars='-', fromfile_prefix_chars=None, argument_default=None, conflict_handler='error', add_help=True, allow_abbrev=True)

Modified ArgumentParser.

Expand source code

class DefaultHelpParser(argparse.ArgumentParser):
    """Modified ArgumentParser."""

    def error(self, message):
        sys.stderr.write(f"error: {message}\n")
        self.print_help()
        sys.exit(2)

Ancestors

• argparse.ArgumentParser
• argparse._AttributeHolder
• argparse._ActionsContainer

Methods

def error(self, message)

error(message: string)

Prints a usage message incorporating the message to stderr and exits.

If you override this in a subclass, it should not return – it should either exit or raise an exception.