def get_unpack_formats():
formats = [(name, info[<NUM_LIT:0>], info[<NUM_LIT:3>]) for name, info in<EOL>_UNPACK_FORMATS.items()]<EOL>formats.sort()<EOL>return formats<EOL>
Returns a list of supported formats for unpacking.

    Each element of the returned sequence is a tuple
    (name, extensions, description)