[Python] How to set an image for class that inherits Turtle

What I am trying to do is create a class called Meteor() which inherits from the turtle.Turtle() class. My current code is this:

from turtle import Turtle


class Meteor(Turtle):
def __init__(self, health):
Turtle.__init__(self)
self.health = health


I am trying to somehow make my Meteor() class have a shape of an image of a meteor. I tried this:

class Meteor(Turtle):
def __init__(self, health):
Turtle.__init__(self)

self.health = health
self.image = tkinter.PhotoImage('Spinning-asteroid-6.gif')
Screen().register_shape('meteor', Shape('image', self.image))
self.shape('meteor')


But when I call Meteor() in my main file, the turtle does not appear.

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