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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def circle_left(self, radius_m, velocity=VELOCITY, angle_degrees=360.0):
 """ Go in circle, counter clock wise :param radius_m: The radius of the circle (meters) :param velocity: The velocity along the circle (meters/second) :param angle_degrees: How far to go in the circle (degrees) :return: """

        distance = 2 * radius_m * math.pi * angle_degrees / 360.0
        flight_time = distance / velocity

        self.start_circle_left(radius_m, velocity)
        time.sleep(flight_time)
        self.stop()