In Python, is there a way to make argparse sub-commands case insensitive?

Question

From https://docs.python.org/3/library/argparse.html#sub-commands, is there a way to make the add_parser commands case insensitive?

E.g. I want to be able to read a sensor using 'read_sensor' or 'READ_SENSOR', for example.

I know we can make add_argument() commands case insensitive using the type parameter, but the add_parser command does not have a type parameter..