Function _unpack_args

Lib/typing.py:341–349

(*args)

def _unpack_args(*args):
    newargs = []
    for arg in args:
        subargs = getattr(arg, '__typing_unpacked_tuple_args__', None)
        if subargs is not None and not (subargs and subargs[-1] is ...):
            newargs.extend(subargs)
        else:
            newargs.append(arg)
    return newargs

def _deduplicate(params, *, unhashable_fallback=False):
    # Weed out strict duplicates, preserving the first of each occurrence.