python api sample

#!/usr/bin/python

import httplib2
import os
import sys

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

CLIENT_SECRETS_FILE = "client_secret.json"

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

MISSING_CLIENT_SECRET_MESSAGE = """
WARNING: Please configure OAuth 2.0

To make this sample run you will need to populate the client_secrets.json file
found at:

		%S

with information from the Developers Console
https://console.developers.google.com/

For more information about the client_secrets.json file format, please vist:
https://developers.google.com/api-client-library/python/guide/aaa_client_secrets
""" % os.path.abspath(os.path.join(os.path.dirname(__file__),
	CLIENT_SECRETS_FILE))

def get_authenticated_service(args):
	flow = flow_from_clientsecrets(CLIENT_SECRETS_FILE,
		scope=YOUTUBE_READ_WRITE_SCOPE,
		message=MISSING_CLIENT_SECRETS_MESSAGE)

	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 post_bulletin(youtube, args):
		body = dict(
			snippet=dict(
					description=args.message
				)
			)

			if args.vide_id:
				body["contentDetails"] = dict(
					bulletin=dict(
						resourceID=dict(
							kind="youtube#video",
							videoId=args.video_id
							)
						)
					)

			if args.playlist_id:
				body["contentDetails"] = dict(
					bulletin=dict(
						resourceId=dict(
						kind="youtube#playlist",
						playlistId=args.playlist_id
						)
					)
				)

			youtube.activities().insert(
				part=",".join(body.keys()),
				body=body
				).execute()

		if __name__ == "__main__":
			argparser.add_argument("--message", requred=True,
				help="Text of message to post.")
			argparser.add_argument("--video-id",
				help="Optional ID of video to post.")
			argparser.add_argument("--playlist-id",
				help="Optional ID of playllist to post.")
			args = argparser.parse_args()

			if args.video_id and args.playlist_id:
				exit("You cannnot post a video and a playlist at the same time.")

			youtube = get_authenticated_service(args)
			try:
				post_bulletin(youtube, args)
			except HttpError, e:
				print "An HTTP error %d occurred:\n%s" % (e.resp.status, e.content)
			else:
				print "The bulletin was posted to your channel."