Given a datetime.timedelta object, return the delta in milliseconds

def datetime_delta_to_ms(delta):
    """
    Given a datetime.timedelta object, return the delta in milliseconds
    """
    delta_ms = delta.days * 24 * 60 * 60 * 1000
    delta_ms += delta.seconds * 1000
    delta_ms += delta.microseconds / 1000
    delta_ms = int(delta_ms)
    return delta_ms