如何以编程方式确定YouTube视频是否受年龄限制？

import googleapiclient.discovery
import googleapiclient.errors

# 创建YouTube Data API客户端
youtube = googleapiclient.discovery.build('youtube', 'v3', developerKey='YOUR_API_KEY')

def check_age_restriction(video_id):
    try:
        # 获取视频的详细信息
        response = youtube.videos().list(
            part='contentDetails',
            id=video_id
        ).execute()

        # 检查内容评级字段的值
        content_rating = response['items'][0]['contentDetails']['contentRating']['ytRating']
        if content_rating == 'ytAgeRestricted' or content_rating == 'ytAgeRestrictedInappropriate':
            return True
        else:
            return False

    except googleapiclient.errors.HttpError as e:
        print('发生错误：', e)
        return False

# 调用函数检查视频是否受年龄限制
video_id = 'YOUR_VIDEO_ID'
is_age_restricted = check_age_restriction(video_id)
if is_age_restricted:
    print('该视频受年龄限制')
else:
    print('该视频不受年龄限制')