save project

diy.py

 with open(r"d:\a\sales_list.txt","r",encoding="utf-8") as b:
     a=b.readlines()
-c=[]
 for i in a:
     data=i.split()
     sum=0
     for i in data[1:]:
         sum=sum+int(i)
-    d=data[0]+str(sum)+"\n"
-    c.append(d)
-
-with open(r"d:\a\sales_list.txt","a",encoding="utf-8") as b:
-    b.writelines(c)
-
+    d=data[0]+str(sum)
+    print(d)
\ No newline at end of file