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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 _remove_keys(cls, parent_dict, paths):
 """ Remove a list of keys from a dictionary. Keys are specified as a series of `.` separated paths for keys in child dictionaries, e.g 'parent_key.child_key.grandchild_key'. """


        for path in paths:
            keys = cls._path_to_keys(path)

            # Traverse to the tip of the path
            child_dict = parent_dict
            for key in keys[:-1]:
                child_dict = child_dict.get(key)

                if child_dict is None:
                    break

            if child_dict is None:
                continue

            # Remove the key
            if keys[-1] in child_dict:
                child_dict.pop(keys[-1])