auto save

diy.py

+with open(r'D:\ty\sales_list.txt','r',encoding='utf-8') as BANBAN:
+    a=BANBAN.readlines()
+final_sum=[]
+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(r'D:\ty\new_sales_list.txt','a',encoding='utf-8') as BANBAN:
+    BANBAN.writelines(final_sum)
\ No newline at end of file