youtubeapiv3搜索通道丢失结果-python

我想搜索所有在YouTube频道标题或描述中包含关键字“投资”的YouTube频道,保留一些频道变量并将其存储在数据帧中。我正在使用API v3。

我创建了以下Python代码(在不同的页面结果上循环):

def search_channels_with_keyword(youtube, keyword):                      
    
    # Initialize variables for pagination (prepare the loop over YT 50 results x page)
    next_page_token = None
    channels = []                        # store/append results in this list

    while True:
        # Search channels with given keyword in title/description
        search_response = youtube.search().list(
            q=keyword, part='snippet', type='channel', maxResults=50, 
            pageToken=next_page_token                                       
        ).execute()

        # Process the search results
        for search_result in search_response.get('items', []):
            channel_id = search_result['id']['channelId']
            channel_title = search_result['snippet']['title']
            channel_description = search_result['snippet']['description']
            channel_thumbnailurl = item['snippet']['thumbnails']['default']['url']
            channels.append({                                                          # Append vars in list 'channels'
                'channel_id': channel_id,
                'channel_title': channel_title,
                'channel_description': channel_description,
                'channel_thumbnailurl': channel_thumbnailurl
            })
            
        # Check if more pages to fetch
        next_page_token = search_response.get('nextPageToken')
        if not next_page_token:
            break                                   # Exit the loop if no more pages

    return channels

if __name__ == "__main__":
    keyword = 'investment'                             
    channels = search_channels_with_keyword(youtube, keyword)

    # Store results in pandas df
    df_channels = pd.DataFrame(channels)
    df_channels

上面的代码提供了一些不错的输出(584个频道带有所需的关键字“投资”),但很少有手动检查让我知道这绝对不是一个全面的列表。例如,它不提供 this YT频道拥有+20万用户。

恐怕我错过了许多(重要的)渠道。API有问题吗?用我的代码?

提前感谢大家,