A Python script that uses the Google Youtube API to retrieve one's own playlists

my_youtube_playlists.py

import os
import json
import os.path
import google.oauth2.credentials
from google.oauth2.credentials import Credentials
from googleapiclient.discovery import build
from googleapiclient.errors import HttpError
from google_auth_oauthlib.flow import InstalledAppFlow

CLIENT_SECRETS_FILE = "client_secret.json"
SCOPES = ['https://www.googleapis.com/auth/youtube.force-ssl']
API_SERVICE_NAME = 'youtube'
API_VERSION = 'v3'

def get_authenticated_service():
  if os.path.isfile("credentials.json"):
    with open("credentials.json", 'r') as f:
      creds_data = json.load(f)
    creds = Credentials(creds_data['token'])
  else:
    flow = InstalledAppFlow.from_client_secrets_file(CLIENT_SECRETS_FILE, SCOPES)
    creds = flow.run_console()
    creds_data = {
          'token': creds.token,
          'refresh_token': creds.refresh_token,
          'token_uri': creds.token_uri,
          'client_id': creds.client_id,
          'client_secret': creds.client_secret,
          'scopes': creds.scopes
      }
    print(creds_data)
    with open("credentials.json", 'w') as outfile:
      json.dump(creds_data, outfile)
  return build(API_SERVICE_NAME, API_VERSION, credentials = creds)

def dump_channels(service):
  results = service.channels().list(part='snippet,contentDetails,statistics', mine=True).execute()
  with open("channels.json", 'w') as outfile:
    json.dump(results, outfile)
  print('This channel\'s ID is %s. Its title is %s, and it has %s views.' %
       (results['items'][0]['id'],
        results['items'][0]['snippet']['title'],
        results['items'][0]['statistics']['viewCount']))

if __name__ == '__main__':
  os.environ['OAUTHLIB_INSECURE_TRANSPORT'] = '1'
  service = get_authenticated_service()
  #results = service.subscriptions().list(part='snippet', mine=True)
  
  results = service.playlists().list(part='snippet', mine=True, maxResults=50).execute();
  for item in results['items']:
    print (item['snippet']['title']);
    
  results = service.playlists().list(part='snippet', mine=True, maxResults=50, pageToken=results['nextPageToken']).execute();
  for item in results['items']:
    print (item['snippet']['title']);
  
  #with open("playlists.json", 'w') as outfile:
    #json.dump(results, outfile)