#object oriented programming in python
#1st prg
class stud1:
  a=0
  def _init_(self,b,c):
          self.k=b 
          self.l=c
  #def input():
       #stud.a=input("Data:")
  def display(self):
       print stud1.a
       print self.k
       print self.l 
s1=stud1(30,40)
#s1.input()
s1.display()



  