a, *_, b = config( **{ k:int(v) for k,v in self.request.GET.items() if k in self.keys_allowed })This is the code exactly as I've been given it. I understand the last two lines, but can't find anything online that matches the format of a, *_, b = config, though I know the stuff inside the brackets is an anonymous function. Speaking of, k:int(v) doesn't even look like Python code. I would greatly appreciate any and all help in this regard. Thank you very much in advance!