[Solved] import monster does not work and I cannot call my Goblin() subclass.

import random

COLORS = ['yellow', 'red', 'green', 'blue']
WEAPONS = ['axe', 'bow and arrow', 'ninja stars']
class Monster:
    min_hit_points = 1
    max_hit_points = 1
    min_experience = 1
    max_experience = 1
    sound = 'roar'


    def __init__(self, **kwargs):
        self.hit_points = random.randint(self.min_hit_points, self.max_hit_points)
        self.experience = random.randint(self.min_experience, self.max_experience)
        self.color = random.choice(COLORS)
        self.weapon = random.choice(WEAPONS)

        for key, value in kwargs.items():
            setattr(self, key, value)


    def battlecry(self):
        return self.sound.upper()

class Goblin(Monster):
    max_hit_point = 3
    max_experience = 2
    sound = 'squeak'

class Troll(Monster):
    min_hit_points = 3
    max_hit_points = 5
    min_experience = 2
    max_experience = 6
    sound = 'growl'

class Dragon(Monster):
    min_hit_points = 5
    max_hit_points = 10
    min_experience = 6
    max_experience = 10
    sound = 'raaarrr'