save project

diy.py

@@ -8,4 +8,4 @@ for i in a:
     result = data[0]+str(sum)
     final_sum.append(result)
 with open(r'c:\Users\Think\Documents\lesson13-1\sales_list.txt','a',encoding='utf-8')as mufan:
-
+    file.writelines(final_sum)