import turtle as tt

def turtle_01():
    """Draw a square"""
    # Settings
    tt.bgcolor("black")
    tt.color("magenta")
    tt.speed(2)
    
    # Square
    tt.forward(100)
    tt.right(90)
    tt.forward(100)
    tt.right(90)
    tt.forward(100)
    tt.right(90)
    tt.forward(100)
    
    tt.exitonclick()