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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 get_max_distance_from_start(latlon_track):
    '''
    Returns the radius of an entire GPS track. Used to calculate whether or not the entire sequence was just stationary video
    Takes a sequence of points as input
    '''
    latlon_list = []
    # Remove timestamps from list
    for idx, point in enumerate(latlon_track):
        lat = latlon_track[idx][1]
        lon = latlon_track[idx][2]
        alt = latlon_track[idx][3]
        latlon_list.append([lat, lon, alt])

    start_position = latlon_list[0]
    max_distance = 0
    for position in latlon_list:
        distance = gps_distance(start_position, position)
        if distance > max_distance:
            max_distance = distance
    return max_distance