Class calling functions automatically in Python

This is my current class:

class abc:
    def __init__(self, a=0, b=0):
        self.c= c
        self.b = b
        self.a = a

    def type_func(self):
        type = raw_input("enter the type")
        if type == "A":
            self.b = 5
        else:
            self.b = 1
    #cab().register()

    def input(self):
        self.c = int(raw_input("enter c"))
    #cab().display()

    def display(self):
      print self.a,self.b*self.c

c = cab()

      

        
        
        
      

    

I want to call c.type_func()

, and then make the program automatically calls input()

, and when this is done call display()

.

How should I do it?