save project

diy.py

 with open(r'c:\Users\玛酷001\Documents\lesson13-4\sales_list.txt','r',encoding='utf-8') as file:
     a=file.readlines()
+    final_sum=[]
     for i in a:
         data=i.split()
         #print(data)
         sum=0
         for sales in data[1:]:
             sum=sum+int(sales)
-        result=data[0]+str(sum)
+        result=data[0]+str(sum)+"\n"
         print(result)
 
 with open(r'c:\Users\玛酷001\Documents\lesson13-4\sales_list.txt','r',encoding='utf-8') as file:
-    a=fill.writelines(final_sum)
\ No newline at end of file
+    a=file.writelines(final_sum)
\ No newline at end of file