save project

diy.py

 with open(r"c:\Users\EDZ\Documents\lesson13-1\sales_list.txt","r",encoding="utf-8") as file:
     a=file.readlines()
 #print(a)
+aasum=[]
 
 for i in a:
     
@@ -11,7 +12,9 @@ for i in a:
     for sales in www[1:]:
         sum=sum+int(sales)
     qq=www[0]+str(sum)
-    a=print(qq)
+    aasum.append(qq)
+with open(r"c:\Users\EDZ\Documents\lesson13-1\new_sales_list.txt","r",
+    file.writelines(aasum)