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'
+# fill1=open(r"C:\Users\合肥路 001\Desktop\book.txt","a",encoding="utf-8")
+# fill1.write('小胖:20本')
+# fill1.close()
+with open(r"C:\Users\合肥路 001\Desktop\book.txt","r",encoding="utf-8") as filel:
+    # fill1.write('小瘦:20本\n')
+    for data in filel:
+        if'小强:10本'in data:
+            print("数据在文件中")
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