save project

quiz.py

 with open(r'D:\test_new.txt','r',encoding='utf-8') as f:
-    a=f.readlines()
-for i in a:
+    b=f.readlines()
+a=[]
+for i in b:
     data=i.split()
     sum=0
     for sales in data[1:]:
-        sum=sum+int(sales)
-    a=data[0]+str(sum)    
-    print(a)
+        sum = sum + int(sales)
+    s = data[0] + str(sum) + '\n'
+    a.append(s)    
+    with open(r'D:\test_new.txt','a',encoding='utf-8') as f:
+        f.writelines(a)
\ No newline at end of file