auto save

diy.py

@@ -7,3 +7,7 @@ file1.write('张伟:16本\n')
 file1.close()
 file1.close()
 with open(r'C:\Users\Administrator\Desktop\test.txt','a',encoding='utf-8')as file1:
 with open(r'C:\Users\Administrator\Desktop\test.txt','a',encoding='utf-8')as file1:
     file1.write('小兰:12本\n')
     file1.write('小兰:12本\n')
+with open(r'C:\Users\Administrator\Desktop\test.txt','r',encoding='utf-8')as file1:
+    for data in file1:
+        if '小丽:11本' in data:
+            print("有此文件")
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