auto save

diy.py

 with open(r'c:\Users\EDZ\Documents\lesson13-4\sales_list.txt','r',encoding='utf-8')as files:
     a=files.readlines()
+lise=[]
 for i in a:
     #print(i)
     date=i.split()
@@ -8,9 +9,11 @@ for i in a:
     sum=0
     for sale in date[1:]:
         sum+=int(sale)
-    result=date[0]+str(sum)
+    result=date[0]+str(sum)+"\n"
+    lise.append(result)
     print(result)
-
+with open(r'"C:\Users\EDZ\Desktop\test.txt"','a',encoding='utf-8')as files:
+    files.writelines(list)