auto save

diy.py

 with open(r'c:\Users\Administrator\Documents\lesson13-1\sales_list.txt','r',encoding='utf-8') as file:
 with open(r'c:\Users\Administrator\Documents\lesson13-1\sales_list.txt','r',encoding='utf-8') as file:
     a=file.readlines()
     a=file.readlines()
+book=[]
 for i in a:
 for i in a:
-    print(i)
+    data=i.split()
\ No newline at end of file
+    sum=0
+    for b in data[1:]:
+        sum+=int(b)
+    name=data[0]+str(sum)
+    book.append(name)
+with open(r'c:\Users\Administrator\Documents\lesson13-1\sales_list.txt','a',encoding='utf-8') as file:
+    file.writelines(book)
\ No newline at end of file