auto save

diy.py

@@ -8,4 +8,4 @@ file.close()
 with open("C:\\Users\\Administrator\\Desktop\\test.txt",'a',encoding='utf-8') as file:
     file.write('小强：12本')
     file.write('李明：15本')
-
+with open("C:\\Users\\Administrator\\Desktop\\test.txt",'r',encoding='utf-8') as file: