Rounding up Ignacio’s answer and orokusaki’s comment you probably should write something like
import turtle
class TurtleGTX(turtle.Turtle):
"""My own version of turtle"""
def __init__(self,*args,**kwargs):
super(TurtleGTX,self).__init__(*args,**kwargs)
print("Time for my GTX turtle!")
my_turtle = TurtleGTX()
my_turtle.forward(100)