auto save

diy.py

-filel=open(r'C:\Users\MK016\Desktop\'text.txt','w',encoding='utf-8')
-filel.write('小兰:12本')
-filel.write('小丽:11本')
-filel.write('李文:9本')
-filel.write('张伟:16本')
-filel.close()
+with open(r'C:\Users\MK016\Desktop\'text.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')
+   
+   
\ No newline at end of file