Web Reference: The docs say, "Changed in version 3.11: Calling add_argument_group () or add_mutually_exclusive_group () on a mutually exclusive group is deprecated." See docs.python.org/3.11/library/argparse.html#mutual-exclusion 2 days ago · Note that currently mutually exclusive argument groups do not support the title and description arguments of add_argument_group(). However, a mutually exclusive group can be added to an argument group that has a title and description. A group of arguments and options can be marked as mutually exclusive using :mutex(argument_or_option, ...) method of the Parser class. If more than one element of a mutually exclusive group is used, an error is raised.
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