YouTube API: Hacer sub a un canal con script de Python

yt-api-sub-channel.py

#!/usr/bin/python

import httplib2
import sys

from apiclient.discovery import build
from apiclient.errors import HttpError
from oauth2client.client import flow_from_clientsecrets
from oauth2client.file import Storage
from oauth2client.tools import argparser, run_flow

# 1. Entra en https://console.developers.google.com/projectselector/home/dashboard
# 2. Crea un project nuevo
# 3. Habilita la API de YT "YouTube Data API" para el project
# 4. En la columna izq haz click en la tab "Credenciales"
# 5. Usa la option "ID de cliente OAuth" para crear las credenciales
# 6. Descarga las credenciales en un archivo JSON y muevelo junto a este script

CLIENT_SECRETS_FILE = "credenciales.json"

# --> VARIABLES <--
CHANNELID_TO_SUB = "UCm63xpddsiHDwVoFZ0c9ArA"

YOUTUBE_READ_WRITE_SCOPE = "https://www.googleapis.com/auth/youtube"
YOUTUBE_API_SERVICE_NAME = "youtube"
YOUTUBE_API_VERSION = "v3"

def get_authenticated_service(args):
  flow = flow_from_clientsecrets(CLIENT_SECRETS_FILE,
    scope=YOUTUBE_READ_WRITE_SCOPE,
    message="Archivo credenciales.json no encontrado")

  storage = Storage("%s-oauth2.json" % sys.argv[0])
  credentials = storage.get()

  if credentials is None or credentials.invalid:
    credentials = run_flow(flow, storage, args)

  return build(YOUTUBE_API_SERVICE_NAME, YOUTUBE_API_VERSION,
    http=credentials.authorize(httplib2.Http()))

def add_subscription(youtube, channel_id):
  add_subscription_response = youtube.subscriptions().insert(
    part='snippet',
    body=dict(
      snippet=dict(
        resourceId=dict(
          channelId=channel_id
        )
      )
    )).execute()

  return add_subscription_response["snippet"]["title"]

if __name__ == "__main__":
  args = argparser.parse_args()
  youtube = get_authenticated_service(args)
  try:
    channel_title = add_subscription(youtube, CHANNELID_TO_SUB)
  except HttpError, e:
    print "An HTTP error %d occurred:\n%s" % (e.resp.status, e.content)
  else:
    print "A subscription to '%s' was added." % channel_title

Para utilizar el script necesitas tener instalada la siguiente librería: pip install --upgrade google-api-python-client