auto save

diy.py

 with open (r'c:\Users\Admin\Documents\lesson13-1\sales_list.txt','r',encoding='utf-8')as files:
 with open (r'c:\Users\Admin\Documents\lesson13-1\sales_list.txt','r',encoding='utf-8')as files:
     a=files.readlines()#read()
     a=files.readlines()#read()
     #print(a)
     #print(a)
+    finally_sum=[]
     for i in a:
     for i in a:
         result=i.split()
         result=i.split()
         sum=0
         sum=0
         for sale in result[1:]:
         for sale in result[1:]:
-            sum=sum=int(sale)
-            count=result[0]+str(sum)
-        finally_sum.apped(count)#print(count)
-with open (r'c:\Users\Admin\Documents\lesson13-1\sales_list.txt','a',encoding='utf-8')as files:
-    files.writeines()
+            sum=sum+int(sale)
+            count=result[0]+str(sum)+'\n'
+        finally_sum.append(count)#print(count)
+with open (r'c:\Users\Admin\Desktop\sales_list.txt','w',encoding='utf-8')as files:
+    files.writelines(finally_sum)
\ No newline at end of file