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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def _set_fields(self):
 """ Initialize the fields for data caching. """

        self.fields = []
        self.required_input = []
        for member_name, member_object in inspect.getmembers(self.__class__):
            if inspect.isdatadescriptor(member_object) and not member_name.startswith("__"):
                self.fields.append(member_name)
                if member_object.required_input:
                    self.required_input.append(member_name)