save project

diy.py

 with open(r'C:\Users\玛酷机器人\Documents\lesson13_2\sales_list.txt','r', encoding='utf-8')as t:
-    a=t.read()
-    b=a.readlines()
+    b=t.readlines()
 # print(a)
 for i in b:
-    b+=int(i)
     print(i)