dr

def rad2deg(value):
    if value < 0.0:
        rad = 180 + 180 * (math.pi + value) / math.pi
    else:
        rad = 180 * value / math.pi

    return rad

def deg2rad(value):
    if value > 180:
        deg = (value - 180) * math.pi / 180 - math.pi
    else:
        deg = value * math.pi / 180

    return deg