Return the distance from the turtle to (x,y) in turtle step units. If y is None, x must be a pair of coordinates, a Vec2D, for example as returned by pos(), or another turtle.
>>> turtle.home() >>> turtle.distance(30,40) 50.0 >>> turtle.distance((30,40)) 50.0 >>> joe = Turtle() >>> joe.forward(77) >>> turtle.distance(joe) 77.0
turtle/distance
distance