auto save

gyfg.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\Desktop\sales_list.txt',' a','encoding='utf-8') as file:
+with open(r'c:\Users\Administrator\Desktop\sales_list.txt','r','encoding='utf-8') as file:
     a=file.readlines()
-    #print(a)
 
+final_sum[]
 for i in a:
-    print(i)
\ No newline at end of file
+    data=i.split()
+    sum=0
+    for sales in data[1:]：
+        sum=sum+int(sales)+'\n'
+    result=data[0]+str(sum)
+    final_sum.append(result)
+with open(r'c:\Users\Administrator\Desktop\sales_list.txt','r','encoding='utf-8') as
+    file.writelines(final_sum)
\ No newline at end of file