save project

diy.py

 with open(r"c:\Users\23636\Documents\lesson13-1\sales_list.txt","r",encoding="utf-8") as file:
     a=file.readlines()
+final_sum=[]
 for i in a:
     data=i.split()
     #print(data[1:])
     sum=0
     for b in data[1:]:
         sum=sum+int(b)
-    new_data=data[0]+str(sum)
-    print(new_data)
\ No newline at end of file
+    new_data=data[0]+str(sum)+"\n"
+    final_sum.append(new_data)
+with open(r"c:\Users\23636\Documents\lesson13-1\new_sales_list.txt","a",encoding="utf-8") as file:
+    file.writelines(final_sum)
\ No newline at end of file