import turtle as tt

def turtle_04():
    """Draw three squares in a row with a gap between each. Fill them using
    three different colours."""
    # Settings
    tt.bgcolor("black")
    tt.color("magenta")
    tt.pensize(3)
    tt.speed(1)
    
    def sqr_draw1(color):
        tt.down()
        tt.fillcolor(color)
        tt.begin_fill()
        tt.back(100)
        tt.left(90)
        tt.forward(100)
        tt.right(90)
        tt.down()
        tt.forward(100)
        tt.right(90)
        tt.forward(100)
        tt.end_fill()

    def sqr_draw2_3(color):
        tt.down()
        tt.fillcolor(color)
        tt.begin_fill()
        tt.forward(100)
        tt.left(90)
        tt.forward(100)
        tt.left(90)
        tt.forward(100)
        tt.left(90)
        tt.forward(100)
        tt.end_fill()

    # Square 1
    tt.up()
    tt.back(75)
    sqr_draw1('yellow')
    
    # Square 2
    tt.up()
    tt.left(90)
    tt.forward(25)
    sqr_draw2_3('orange')
    
    # Square 3
    tt.up()
    tt.left(90)
    tt.forward(125)
    sqr_draw2_3('green')

    tt.exitonclick()