Im testing with the following script. It runs fine if its not part of a git repo. Placing it inside a git repo (though I am testing it in a private bitbucket in my work) and the args arent passed:

#script that just multiplies args, with one arg, x being obligatory
if __name__ == "__main__":
    import argparse

    parser = argparse.ArgumentParser()

    parser.add_argument("--x", type=float, required=True)
    parser.add_argument("--y", type=float, default = 2.)
    parser.add_argument("--z", type=float, default=3.)
    args = parser.parse_args()

    v = 1
    for key, value in vars(args).items():
        print(key, value)
        v *= value

    print(v)