n =input("Enetr the no. of students:")
student_data=["stud_roll no","stud_name","stud_class"]

for i in range (0 , n)

stud_roll no=input("enter the roll no")
print stud_roll no

stud_name =input("enter the name of student")
print stud_name

stud_class =input("enter the class name")
print stud_class

dict{'name':stud_name,'roll no':stud_roll no,'class':student_class}
