Update code style for Python

codes/python/modules/__init__.py

@@ -0,0 +1,12 @@
+import copy
+import math
+import heapq
+import queue
+import random
+import functools
+import collections
+from typing import Optional, List, Dict, DefaultDict, OrderedDict, Set, Deque
+from .linked_list import ListNode, list_to_linked_list, linked_list_to_list, get_list_node
+from .binary_tree import TreeNode, list_to_tree, tree_to_list, get_tree_node
+from .vertex import Vertex, vals_to_vets, vets_to_vals
+from .print_util import print_matrix, print_linked_list, print_tree, print_dict, print_heap