save project

diy.py

 with open(r'c:\Users\A3\Desktop\sales_list.txt','r',encoding = 'utf-8') as file:
     a = file.readlines()
+wsybb_num = []
 for i in a:
     data = i.split()
     sum = 0
     for sales in data[1:]:
         sum += int(sales)
-    result = data[0] + ':' + str(sum) + '元'
+    result = data[0] + ':' + str(sum) + '元' + '\n'
     print(result)
-
-
+    wsybb_num.append(result)
+with open(r'c:\Users\A3\Desktop\sales_list.txt','a',encoding = 'utf-8') as file:
+    file.writelines(wsybb_num)