diff --git a/diy.py b/diy.py
index 9aa17e9..735d7fb 100644
--- a/diy.py
+++ b/diy.py
@@ -1,3 +1,5 @@
 # 写入同学们的捐赠明细：'小兰：12本'、'小丽：11本'、'李文：9本'、'张伟：16本'
-with open(r"C:\Users\MY-PC\Desktop\book1","a",encoding="utf-8") as a:
-    a.write("小兰：12本\n")
\ No newline at end of file
+with open(r"C:\Users\MY-PC\Desktop\book1","r",encoding="utf-8") as a:
+    for i in a:
+        if "张伟：16本" in a:
+            print("F")
\ No newline at end of file