auto save

diy.py

@@ -4,6 +4,7 @@ filel.write('小美：12本\n')
 filel.write('小丽：11本\n')
 filel.write('李文：9本\n')
 filel.close()
-with open(r'C:\\Users\\Public\\Desktop\\test.txt',"r",encoding='utf-8')asfile1:
-    a=filel.read() 
-    print(a)
\ No newline at end of file
+with open(r'C:\\Users\\Public\\Desktop\\test.txt','r',encoding='utf-8')as file1:
+ for data in filel:
+     if'小丽：11本'in data:
+         print('数据在文件中')
\ No newline at end of file