diff --git a/diy.py b/diy.py
index b9565e8..2b94aa6 100644
--- a/diy.py
+++ b/diy.py
@@ -6,7 +6,7 @@ for i in a:
     data=i.split()
     for sales in data[1:]:
         sum=sum+int(sales)
-    result=data[0]+str(sum)+"\n"
+    result=data[0]+str(sum)+'\n'
     g.append(result)
-with open( r'c:\Users\admin\Documents\lesson13-4\sales_list.txt','w',encoding='utf-8') as file:
+with open( r'c:\Users\admin\Documents\lesson13-4\sales_list.txt','a',encoding='utf-8') as file:
     file.writelines(g)
\ No newline at end of file