Update code style for Python

codes/python/modules/vertex.py

@@ -0,0 +1,18 @@
+# File: vertex.py
+# 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']:
+    """ 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]:
+    """ 输入顶点列表 vets ，返回值列表 vals """
+    return [vet.val for vet in vets]