save project

diy.py

 with open(r"C:\Users\EDZ\Documents\lesson13-3\sales_list.txt",'r',encoding='utf-8')as file:
     a=file.readlines()
     sum=0
+    list=[]
     for i in a:
         num=i.split()
         for mk in num[1:]:
             sum=sum+int(mk)
-        result=num[0]+str(sum)
-        print(result)
+        result=num[0]+str(sum)+"\n"
+    list.append(result)
+with open(r"C:\Users\EDZ\Documents\lesson13-3\bb.txt",'r',encoding='utf-8')as file:
+    file.writelines(list)
         
\ No newline at end of file