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argparse required arguments

parser.add_argument('--use-lang', required=True, help="Output language")

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argparse print help if no arguments

parser.argparse.ArgumentParser()
# parser.add_args here

# sys.argv includes a list of elements starting with the program
if len(sys.argv) < 2:
    parser.print_usage()
    sys.exit(1)

Comment

argparse one argument or without argument

parser.add_argument("-a", "--automatic", nargs="?", const=8, type=int)

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PYTHON

argparse required arguments

argparse print help if no arguments

argparse one argument or without argument

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