YouTube API on Cloud Run

app.py

import os
import argparse
from dotenv import load_dotenv
from flask import Flask, request
from googleapiclient.discovery import build
from googleapiclient.errors import HttpError

# Setup YouTube API
KEY = os.environ.get('KEY')
YOUTUBE_API_SERVICE_NAME = 'youtube'
YOUTUBE_API_VERSION = 'v3'

load_dotenv()
app = Flask(__name__)


@app.route('/')
def yt():
    if not KEY:
        return '"KEY" env var is required'
    youtube = build('youtube', 'v3', developerKey=KEY)

    # Get YouTube API results
    search_response = youtube.search().list(
        q=request.args.get('q') or 'cats',
        type='video',
        part='id,snippet',
        maxResults=10
    ).execute()
    items = search_response['items']
    if not items:
        return 'Error: No YouTube results'

    # Sent an HTML page with the top ten videos
    def video_filter(api_video):
        title = api_video['snippet']['title']
        videoid = api_video['id']['videoId']
        url = f'https://youtu.be/{videoid}'
        return {
            'title': title,
            'url': url,
        }
    videos = list(map(video_filter, items))

    return {
        'results': videos
    }

if __name__ == "__main__":
    app.run(debug=True, host='0.0.0.0', port=int(os.environ.get('PORT', 8080)))