save project

diy.py

 file=open(r'C:\Users\86185\Desktop\sales_list.txt','r',encoding='utf-8')
   a=file.readlines()
+final_sum=[]
 for i in a:
 sad=i.split()
   sum=0
@@ -7,7 +8,8 @@ sad=i.split()
     sum=sum+int(sales)
   result=data[0]+str(sum)
   print(result)
-
+with open(r'C:\Users\86185\Desktop\sales_list.txt','a',encoding='utf-8')
+file.writelines(final_sum)