auto save

diy.py

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