auto save

diy.py

-with open(r"C:\Users\Administrator\Documents\lesson13-1\sales_list.txt","r",encoding="utf-8") as file:

diy2.py

+# 在diy1的基础上选一种打开方式，建议选with open() as
+with open(r'C:\Users\Administrator\Documents\lesson13-1\sales_list.txt','r',encoding='utf-8') as file:
+    a=file.readlines()
+    #print(a)
+
+for i in a:
+    data=i.split()
+    #print(data[1:])
+    sum=0
+    for sales in data[1:]:
+        sum=sum+int(sales)
+    result=data[0]+str(sum)
+    print(result)