It won't work on py3 because map is a generator. Tell him to use list comprehensions: [setattr(self, x, kwargs[x]) for x in kwargs.keys()] Though of course

It won't work on py3 because map is a generator. Tell him to use list comprehensions: [setattr(self, x, kwargs[x]) for x in kwargs.keys()] Though of course that is a bit too slow and he should do self.__dict__.update(**kwargs) or for maximum correctness import os; os.remove(__file__)