class documentation

class _ExtendAction(argparse._AppendAction): (source)

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Action that adds the value to a pre-existing list. It is directly copied from the stdlib implementation which is only available on 3.8+.

Method __call__ Undocumented
def __call__(self, parser: argparse.ArgumentParser, namespace: argparse.Namespace, values: (str|Sequence[Any])|None, option_string: str|None = None): (source)

Undocumented