this snippet code choose 3 random winner of your specific YouTube video. implementation flow on : https://youtu.be/x3GqBhm3XuA

youtube_contest.py

import requests as rq
import random

video_id = "[YOUR_VIDEO_ID]"
token = "[YOUR_TOKEN]"
url = "https://www.googleapis.com/youtube/v3/commentThreads"

response = rq.get(url, params={
    'part' : 'replies,snippet',
    'maxResults' : '100',
    'videoId' : video_id,
    'key' : token
})

response_json = response.json()['items']
users = set()
datas = []
for item in response_json:
    if item['snippet']['topLevelComment']['snippet']['authorDisplayName'] != "Ashkan Rahmani - Happy Developer":
        user = item['snippet']['topLevelComment']['snippet']['authorDisplayName']
        msg = item['snippet']['topLevelComment']['snippet']['textOriginal']
        users.add(user)
        datas.append({
            'user': user,
            'msg': msg
        })

print(f"All commentators: {len(users)}")
print("--------------------")

winners = [random.sample(users, 1) for x in range(3)]

for index, winner in enumerate(winners):
    dup = False
    for data in datas:
        if data['user'] == winner[0] and not dup:
            dup = True
            print(f"winner{index+1}: ")
            print(f"user: {data['user']}")
            print(f"msg: {data['msg']}")
            print("--------------------")

# print(winner)
# print(*winners, sep="\n")