def __init__(self):
        '''\
Create an empty union find data structure.'''
        self.num_weights = {}
        self.parent_pointers = {}
        self.num_to_objects = {}
        self.objects_to_num = {}
        self.__repr__ = self.__str__
Create an empty union find data structure.
recipes/Python/215912_Union_Find_data_structure/recipe-215912.py