dent(x,y,z):
   result = {}
   result[roll_no] = [std_name, marks]
   print(result)


n = int(input("Enter No of Students:"))
for i in range(n):

   roll_no = int(input("Roll No: "))
   std_name = input("Student Name: ")
   marks = int(input("Marks: "))
   student(std_name, roll_no, marks)

• python