save project

diy.py

 with open(r"c:\Users\EDZ\Documents\lesson13-1\sales_list.txt","r",encoding="utf-8")as file1:
     a=file1.readlines()
+    b=[]
 #print(a)
 for i in a:
     i=i.split()
@@ -8,5 +9,8 @@ for i in a:
     sum=0
     for sales in i[1:]:
         sum=sum+int(sales)
-    a=i[0]+str(sum)
-    print(a)
\ No newline at end of file
+    a=i[0]+str(sum)+'\n'
+    b.append(a)
+    print(a)
+    with open(r"c:\Users\EDZ\Documents\lesson13-1\sales_list.txt","a",encoding="utf-8")as file1:
+        
\ No newline at end of file