refactor: Follow the PEP 585 Typing standard (#439)

* Follow the PEP 585 Typing standard

* Update list.py

codes/python/modules/vertex.py

@@ -2,17 +2,15 @@
 # Created Time: 2023-02-23
 # Author: Krahets (krahets@163.com)
 
-from typing import List
-
 class Vertex:
     """ 顶点类 """
     def __init__(self, val: int) -> None:
         self.val = val
 
-def vals_to_vets(vals: List[int]) -> List['Vertex']:
+def vals_to_vets(vals: list[int]) -> list['Vertex']:
     """ 输入值列表 vals ，返回顶点列表 vets """
     return [Vertex(val) for val in vals]
 
-def vets_to_vals(vets: List['Vertex']) -> List[int]:
+def vets_to_vals(vets: list['Vertex']) -> list[int]:
     """ 输入顶点列表 vets ，返回值列表 vals """
     return [vet.val for vet in vets]