auto save

diy.py

+# 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\张颜\Desktop\demo.txt","r",encoding='utf-8') as word:
+    for date in word:
+        if "小强：20本" in date:
+            print("数据存在")
+        else:
+            print("不在")
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