save project

diy.py

@@ -9,7 +9,6 @@ with open(r'c:\Users\Ding\Documents\lesson13-1\sales_list.txt','r',encoding='utf
         for d in c:
         for d in c:
             z=z+int(d)
             z=z+int(d)
         y=b[0]+str(z)+'\n'
         y=b[0]+str(z)+'\n'
-        x.append(y)
 
 
 with open(r'c:\Users\Ding\Documents\lesson13-1\sales_list.txt','a',encoding='utf-8') as sales_list:
 with open(r'c:\Users\Ding\Documents\lesson13-1\sales_list.txt','a',encoding='utf-8') as sales_list:
     sales_list.writelines(x)
     sales_list.writelines(x)
\ No newline at end of file