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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def main():
 """Command line entry point for dcal."""


    if "--help" in sys.argv or "-h" in sys.argv or len(sys.argv) > 3:
        raise SystemExit(__doc__)

    try:
        discordian_calendar(*sys.argv[1:])
    except ValueError as error:
        raise SystemExit("Error: {}".format("\n".join(error.args)))