auto save

diy.py

+with open(r'c:\Users\Administrator\Desktop\sales_list.txt','r',encoding='utf-8') as file:
+    a=file.readlines()
+    for i in a:
+        data=i.split()
+        sum=0
+        for sales in data[1:]:
+            sum=sum+int(sales)
+        result=data[0]+str(sum)+'\n'
+        final_sum.append(result)
+    with open()
+