gistfile1.txt

def download_video(video_id, path="videos", verbose=True):
    
    """
    Download the videos
    Parameters
    ----------
    video_id : str
        A Youtube video id. 
    path: str
        The directory which stores videos.
    verbose: bool
        Whether to log the intermediate results.
        
    Returns
    -------
    True/False
        Successfully downloaded the video or not.
    """
    
    try:
        # get video url
        video_url = "https://www.youtube.com/watch?v=" + video_id

        try:
            video = pafy.new(video_url)
            # get best video format
            best = video.getbest(preftype="mp4")
            # download video
            best.download(filepath=path + "/" + video_id + "." + best.extension,
                          quiet=False)
            # log
            if verbose == True:
                print("- {id} video downloaded.".format(id=video_id))

            return True
        except Exception as e:
            print("- {exception}".format(exception=e))
            print("- {id} video cannot be downloaded.".format(id=video_id))
            return False
    except Exception as e:
        print('Failed to download video: {}'.format(e))
        return False