auto save

diy.py

 with open(r"c:\Users\栩栩\Documents\lesson13-1\sales_list.txt",'r',encoding='utf-8') as file:
 with open(r"c:\Users\栩栩\Documents\lesson13-1\sales_list.txt",'r',encoding='utf-8') as file:
-    print(file)    
+    data = file.readlines()
\ No newline at end of file
+    print(data)
+    result = []
+    for i in data:
+        a = i.split()
+        sum = 0
+        for m in a[1:]:
+            sum = sum + int(m)
+        print(sum)
+        result.append(a[0]+str(sum)+"\n")
+
+
+#     print( data)
+with open(r"c:\Users\栩栩\Documents\lesson13-1\sales_list1.txt",'w',encoding='utf-8') as file:
+    file.writelines(result  )
\ No newline at end of file