auto save

diy.py

 with open(r'C:\Users\学生账户\Documents\lesson13-1\sales_list.txt','r',encoding='utf-8') as file1:
     a=file1.readlines()
     #print(a)
+file_sum=[]
 for i in a:
     new_data=i.split()
     #print(new_data[1:])
@@ -8,5 +9,9 @@ for i in a:
     for sales in new_data[1:]:
         sum=sum+int(sales)
     result=new_data[0]+str(sum)
+    
     print(result) 
+with open(r'C:\Users\学生账户\Documents\lesson13-1\sales_list.txt','w',encoding='utf-8')as file2:
+    
+
     
\ No newline at end of file