auto save

diy.py

 with open('c:\\Users\\Administrator\\Desktop\\sales_list.txt','r',encoding='utf-8') as file:
 with open('c:\\Users\\Administrator\\Desktop\\sales_list.txt','r',encoding='utf-8') as file:
-    a=file.readline()
+    a=file.readlines()
     # print(type(a))
     # print(type(a))
     for i in a:
     for i in a:
         print(i)    
         print(i)    
\ No newline at end of file