auto save

diy.py

+with open(r'C:\Users\Administrator\Desktop\新建文件夹\test.txt','r',encoding='utf-8')as file1:
+    for data in file1:
+        if'小强:10本'in data:
+            print('数据在文件中')
+        else:
+            print('数据不在文件中')
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