save project

diy.py

 with open(r'c:\Users\丽达7号\Documents\lesson13-1\sales_list.txt',"r",encoding='utf-8')as file:
 with open(r'c:\Users\丽达7号\Documents\lesson13-1\sales_list.txt',"r",encoding='utf-8')as file:
-    a=readlines()
+    a=file.readlines()
 # print (a)
 # print (a)
 for i in a:
 for i in a:
     print (i)
     print (i)