import turtle
class Etch:
    def __init__(self):
        self.myT = turtle.Turtle()
        self.myT.color('blue')
        self.myT.pensize(2)
        self.myT.speed(0)
        self.distance = 5
        self.turn = 10

        self.myT.onkey(self.fwd,'Up')
        self.myT.onkey(self.bkwd,'Down')
        self.myT.onkey(self.left,'Left')
        self.myT.onkey(self.right,'Right')
        self.myT.onkey(self.quit,'q')
        self.myT.listen()

    def fwd(self):
        self.myT.forward(self.distance)

    def bkwd(self):
        self.myT.backward(self.distance)

    def left(self):
        self.myT.left(self.turn)

    def right(self):
        self.myT.right(self.turn)

    def quit(self):
        self.myT.bye()

    def main(self):
        cTurtle.mainloop()

draw = Etch()
draw.main()

from turtle import Turtle, Screen

class Etch:
    def __init__(self):
        self.myT = Turtle()
        self.myT.color('blue')
        self.myT.pensize(2)
        self.myT.speed(0)
        self.distance = 5
        self.turn = 10

        self.myS = Screen()
        self.myS.onkey(self.fwd,'Up')
        self.myS.onkey(self.bkwd,'Down')
        self.myS.onkey(self.left,'Left')
        self.myS.onkey(self.right,'Right')
        self.myS.onkey(self.quit,'q')
        self.myS.listen()

    def fwd(self):
        self.myT.forward(self.distance)

    def bkwd(self):
        self.myT.backward(self.distance)

    def left(self):
        self.myT.left(self.turn)

    def right(self):
        self.myT.right(self.turn)

    def quit(self):
        self.myS.bye()

    def main(self):
        self.myS.mainloop()

draw = Etch()
draw.main()