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

* Follow the PEP 585 Typing standard

* Update list.py

codes/python/chapter_hashing/array_hash_map.py

@@ -4,10 +4,6 @@ Created Time: 2022-12-14
 Author: msk397 (machangxinq@gmail.com)
 """
 
-import sys, os.path as osp
-sys.path.append(osp.dirname(osp.dirname(osp.abspath(__file__))))
-from modules import *
-
 class Entry:
     """ 键值对 int->String """
     def __init__(self, key: int, val: str):
@@ -19,7 +15,7 @@ class ArrayHashMap:
     def __init__(self):
         """ 构造方法 """
         # 初始化数组，包含 100 个桶
-        self.buckets: List[Optional[Entry]] = [None] * 100
+        self.buckets: list[Entry | None] = [None] * 100
 
     def hash_func(self, key: int) -> int:
         """ 哈希函数 """
@@ -46,25 +42,25 @@ class ArrayHashMap:
         # 置为 None ，代表删除
         self.buckets[index] = None
 
-    def entry_set(self) -> List[Entry]:
+    def entry_set(self) -> list[Entry]:
         """ 获取所有键值对 """
-        result: List[Entry] = []
+        result: list[Entry] = []
         for pair in self.buckets:
             if pair is not None:
                 result.append(pair)
         return result
 
-    def key_set(self) -> List[int]:
+    def key_set(self) -> list[int]:
         """ 获取所有键 """
-        result: List[int] = []
+        result: list[int] = []
         for pair in self.buckets:
             if pair is not None:
                 result.append(pair.key)
         return result
 
-    def value_set(self) -> List[str]:
+    def value_set(self) -> list[str]:
         """ 获取所有值 """
-        result: List[str] = []
+        result: list[str] = []
         for pair in self.buckets:
             if pair is not None:
                 result.append(pair.val)