import turtle
    import math

    def petal(t, r, angle):
        for i in range(2):
            arc(t, r, angle)
            t.lt(180 - angle)

    def flower(t, n, r, angle):
        for i in range(n):
            petal(t, r, angle)
            t.lt(360.0 / n)

    def move(t, length):
        t.pu()
        t.fd(length)
        t.pd()

    def square(t, length):
        for i in range(4):
            t.fd(length)
            t.lt(90)

    def polyline(t, n, length, angle):
        for i in range(n):
            t.fd(length)
            t.lt(angle)

    def polygon(t, n, length):
        angle = 360.0 / n
        polyline(t, n, length, angle)

    def arc(t, r, angle):
        arc_length = 2 * math.pi * r * abs(angle) / 360
        n = int(arc_length / 4) + 3
        step_length = arc_length / n
        step_angle = float(angle) / n

        # making a slight left turn before starting reduces
        # the error caused by the linear approximation of the arc
        t.lt(step_angle / 2)
        polyline(t, n, step_length, step_angle)
        t.rt(step_angle / 2)

    def circle(t, r):
        arc(t, r, 360)

    def kvetina(t,n,r,angle,dlzkastonky,uholstonky,dlzkalistu,hrubkalistu,uhollistusozemou):
        flower(t,n,r,angle)
        x=(uholstonky+180)/2
        bob.rt(x)
        arc(t,dlzkastonky,uholstonky)
        bob.seth(0)
        bob.lt(uhollistusozemou)
        petal(t,dlzkalistu,hrubkalistu)
        bob.seth(180 - uhollistusozemou)
        petal(t, dlzkalistu, -hrubkalistu)

    bob = turtle.Turtle()
    bob.speed(50)

    kvetina(bob,5,60,80,140,90,60,80,0)