从URL获取YouTube视频ID

import re

def get_video_id(url):
    video_id_pattern = re.compile(r'(?:v=|\/)([0-9A-Za-z_-]{11}).*')
    match = video_id_pattern.search(url)
    video_id = match.group(1) if match else None

    return video_id

url = 'https://www.youtube.com/watch?v=dQw4w9WgXcQ'
video_id = get_video_id(url)

print("Video ID:", video_id)

from urllib.parse import parse_qs, urlparse

def get_video_id(url):
    parsed_url = urlparse(url)
    if parsed_url.hostname == 'youtu.be':
        video_id = parsed_url.path[1:]
    if parsed_url.hostname in ('www.youtube.com', 'youtube.com'):
        if parsed_url.path == '/watch':
            video_id = parse_qs(parsed_url.query)['v'][0]
        if parsed_url.path[:7] == '/embed/':
            video_id = parsed_url.path.split('/')[2]
        if parsed_url.path[:3] == '/v/':
            video_id = parsed_url.path.split('/')[2]
    return video_id

url = 'https://www.youtube.com/watch?v=dQw4w9WgXcQ'
video_id = get_video_id(url)

print("Video ID:", video_id)