diff --git a/计算设备/缓存/84.py b/计算设备/缓存/84.py
index 962595c..6cd67ad 100644
--- a/计算设备/缓存/84.py
+++ b/计算设备/缓存/84.py
@@ -21,4 +21,15 @@ def calculate_word_frequency(file_path):
 # 测试函数
 top_10_words = calculate_word_frequency(testfilepath)
 for word, freq in top_10_words:
-    print(f"{word}: {freq}")
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+    print(f"{word}: {freq}")
+
+'''
+python 提供了一种缓存调用函数的机制
+import functools  
+  
+# 使用 functools.lru_cache 缓存结果  
+@functools.lru_cache(maxsize=None)  
+def calculate_word_frequency(file_path):
+    ...
+    retrun result
+'''    
\ No newline at end of file