auto save

diy.py

@@ -6,5 +6,9 @@ with open(r'C:\Users\Administrator\Desktop\test.txt','w',encoding='utf-8') as fi
 #  file.write('李文:9本\n')
 #  file.write('张伟:16本\n')
 # with open(r'C:\Users\Administrator\Desktop\test.txt','r',encoding='utf-8') as file:
+with open(r'C:\Users\Administrator\Desktop\test.txt','w',encoding='utf-8') as file:
+     for data in file:
+         if"张伟:16本"in data:
+             print('在')