From 9a310c53b4a208c543e1dcc98736f413718b121f Mon Sep 17 00:00:00 2001
From: sunshinesDL <61528023+sunshinesDL@users.noreply.github.com>
Date: Sun, 31 Aug 2025 17:25:30 +0800
Subject: [PATCH] Update array_hash_map.py
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基于数组实现的哈希表中，`get()` 函数的返回值还可能会 None；且 `put()` 函数不仅可添加键值对、还可更新表中已有键值对的值；
---
 codes/python/chapter_hashing/array_hash_map.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/codes/python/chapter_hashing/array_hash_map.py b/codes/python/chapter_hashing/array_hash_map.py
index 945f44bb0a..e73973aa01 100644
--- a/codes/python/chapter_hashing/array_hash_map.py
+++ b/codes/python/chapter_hashing/array_hash_map.py
@@ -26,7 +26,7 @@ def hash_func(self, key: int) -> int:
         index = key % 100
         return index
 
-    def get(self, key: int) -> str:
+    def get(self, key: int) -> str | None:
         """查询操作"""
         index: int = self.hash_func(key)
         pair: Pair = self.buckets[index]
@@ -35,7 +35,7 @@ def get(self, key: int) -> str:
         return pair.val
 
     def put(self, key: int, val: str):
-        """添加操作"""
+        """添加和更新操作"""
         pair = Pair(key, val)
         index: int = self.hash_func(key)
         self.buckets[index] = pair