channel_id = 'UCa9gErQ9AE5jT2DZLjXBIdA' # my YouTube channel ID
page_token = None # initialize page token
url = 'https://www.googleapis.com/youtube/v3/search' # YouTube search API 

# extract video data across multiple search result pages
video_id_list = []

while page_token != 0:
    params = {
        "key": my_key, 
        'channelId': channel_id, 
        'part': ["snippet","id"], 
        'order': "date", 
        'maxResults':50, 
        'pageToken': page_token
    }
    response = requests.get(url, params=params)

    for raw_item in dict(response.json())['items']:

        # only execute for youtube videos
        if raw_item['id']['kind'] != "youtube#video":
            continue

        # grab video ids
        video_id_list.append(raw_item['id']['videoId'])

    try:
        # grab next page token
        page_token = dict(response.json())['nextPageToken']
    except:
        # if no next page token kill while loop
        page_token = 0