Function main

Lib/uuid.py:935–992

Run the uuid command line interface.

()

def main():
    """Run the uuid command line interface."""
    uuid_funcs = {
        "uuid1": uuid1,
        "uuid3": uuid3,
        "uuid4": uuid4,
        "uuid5": uuid5,
        "uuid6": uuid6,
        "uuid7": uuid7,
        "uuid8": uuid8,
    }
    uuid_namespace_funcs = ("uuid3", "uuid5")
    namespaces = {
        "@dns": NAMESPACE_DNS,
        "@url": NAMESPACE_URL,
        "@oid": NAMESPACE_OID,
        "@x500": NAMESPACE_X500
    }

    import argparse
    parser = argparse.ArgumentParser(
        formatter_class=argparse.ArgumentDefaultsHelpFormatter,
        description="Generate a UUID using the selected UUID function.",
        color=True,
    )
    parser.add_argument("-u", "--uuid",
                        choices=uuid_funcs.keys(),
                        default="uuid4",
                        help="function to generate the UUID")
    parser.add_argument("-n", "--namespace",
                        choices=["any UUID", *namespaces.keys()],
                        help="uuid3/uuid5 only: "
                        "a UUID, or a well-known predefined UUID addressed "
                        "by namespace name")
    parser.add_argument("-N", "--name",
                        help="uuid3/uuid5 only: "
                        "name used as part of generating the UUID")
    parser.add_argument("-C", "--count", metavar="NUM", type=int, default=1,
                        help="generate NUM fresh UUIDs")

    args = parser.parse_args()
    uuid_func = uuid_funcs[args.uuid]
    namespace = args.namespace
    name = args.name

    if args.uuid in uuid_namespace_funcs:
        if not namespace or not name:
            parser.error(
                "Incorrect number of arguments. "
                f"{args.uuid} requires a namespace and a name. "
                "Run 'python -m uuid -h' for more information."
            )
        namespace = namespaces[namespace] if namespace in namespaces else UUID(namespace)
        for _ in range(args.count):
            print(uuid_func(namespace, name))
    else:
        for _ in range(args.count):
            print(uuid_func())