How to make this class runnable

[peterparker]

#################################
#   Learning to make a game     #
#################################

# An attempt to make a game
# Each room will be described by a class, whose base class will be Room
# The user will be prompted to enter a number, each number will be assigned with a Room in return

from sys import exit

print '-' * 50

print "You are a lone traveller on this earth"
print "who is just roaming and roaming."
print "finally you encounter 5 doors."
print "Each door has some stuff in store for you except one,"
print "which has death in store for you."
print "So choose your doors with cool mind."

print '-' * 50


print "Enter your choice:",
room_chosen = int(raw_input("[keypad]>"))

def dead(why):
    print "why, Good Job!"
    exit(0)

#class Room(object):  #the other room will be derived of this
#   pass

class Room(object):
    pass


class GoldRoom(Room):

    def gold_room(self):

    # here the user will be asked with question on how much Gold he wants   
        print"This room is full of gold. How much do you take!" 
        next = raw_input("[keypad]>")
        print next

        if next.isdigit():
            how_much = int(next)

        else:
            dead("Man, learn to type some number")

        if how_much < 50:
            print "Nice, you are not greedy, you win!"
            exit(0) 
        else:
            dead("You greedy bastard!")

class KoiPondRoom(Room):

    # in this room, the user will be made to relax
        def koi_pond_room(self):
            print "You have entered a room where you can relaz!"
            next = raw_input("> ")

            if next == "Sleeping":
                print "SLEEP WELL!"
            elif next == "Television Watching":
                print "WOHOO! WATCH AMAZING SPIDERMAN!"
            elif next == "EATING":
                print "COOL! NPOW HOG!"
            else:
                print "GO TO HELL!"


class Cthulhu_Room(Room):

    # sort of puzzle to get out
        def cthulhu_room(self):
            print "Here's how see the great evil Cthulhu"
            print "He,it, whatever stares at you and you go insane."
            print "Do you flee for your life or eat your head?" 
            next = raw_input("> ")

            if "flee" in next:
                goldroom = GoldRoom()
                goldroom.gold_room()
            elif "head" in next:
                dead("Well, that was tasty!")
            else:
                cthulhu_room = Cthulhu_Room()
                cthulhu_room.cthulhu_room()

class Bear_Room(Room):

    # bear room
        def bear_room(self):
            print "There's a bear here"
            print "The bear has a bunch of honey."
            print "The fat bear is in front of another door."
            print "How are you going to move the bear."
            bear_moved = False

            while True:
                next = raw_input("> ")

                if next == "take honey":
                    dead("The bear looks at you and then slaps your face off.")
                elif next == "taunt bear" and not bear_moved:
                    print "The bear has moved from the door. You can go through it now."
                    bear_moved = True
                elif next == "taunt bear" and bear_moved:
                    dead("The bear gets pissed off and chews your leg.")
                elif next == "open door" and bear_moved:
                    goldroom = GoldRoom()
                    goldroom.gold_room()
                else:
                    print "I got no idea what it means."

class Dark_Room(Room):

    def dark_room(self):
        print "You have entered a dark room."
        print "If you want to escape, then guess the correct password!"
        print "But you have only three chances,"
        print "failing which you will be locked here forever."

        password = str ("OPEN SEASAME")

        guess = raw_input("Enter password:>")
        guesses = 0
        while guess != password and guesses < 2:
                print "Try again!"
                guesses += 1
                guess = raw_input("Enter password:>")


        if guess == password:
            print "You have made it!"
        else:
            print "YOU HAVE BEEN LOCKED HERE FOREVER,"
            print "NOW SUFFER"      


class Dead_Room(Room):

        def dead_room(self):
            print "You MORON!"
            print "why did you chose this?"
            print "you are DEAD now"


if room_chosen == 1:
    goldroom = GoldRoom()
    goldroom.gold_room()

elif room_chosen == 2:
    koipondroom = KoiPondRoom()
    koipondroom.koi_pond_room() 

elif room_chosen == 3:
    cthulhu_room = Cthulhu_Room()
    cthulhu_room.cthulhu_room()

elif room_chosen == 4:
    bear_room = Bear_Room()
    bear_room.bear_room()

elif room_chosen == 5:
    dark_room = Dark_Room()
    dark_room.dark_room()

elif room_chosen == 6:
    dead_room = Dead_Room()
    dead_room.dead_room()

else:
    print "YOU SUCK!"

[peterparker]

I have written this code. I would like to make a runnable script for the same.

[TrustyTony]

I run the code without problem, but it did crash when given empty string as response.

[peterparker]

"I run the code without problem, but it did crash when given empty string as response."

oh no, by runnable i meant

a python script will be used to run the classes

i mean, a python runner