I got this Itch when i was too reluctant to login to twitter to post … It was a pain . I also get pained by manually making Google Calendar entry . Luckily i found that Google has API’s (googlecl) to use it’s services . So i decided to write a Python App which could enable to me to update and check everything from terminal . So decided to start with Twitter , then google services . The problem i faced with Twitter was that it needed OAuth authentication which is serious pain . So i decided to write this tutorial .
First things comes to our mind is .. What is OAuth ??? It is nothing but a Open Authentication protocol which is being widely adopted . To name few Yahoo and Twitter require OAuth autentication to use it’s services . Say you have a twitter account . There is another website X which wants to access your tweets . Then the website X should know your login credentials . In order to over come this OAuth was introduced . With OAuth the website X can be authorized and it can access the twitter account with the access token given to it . The advantage is private information can be accessed by other applications without knowing the password and with only access token .
1) Now to begin with we first need to create Application Key . Visit this website http://dev.twitter.com/apps/new
2) Once registered you will be given with loads of info . Save it carefully . The most important thing in that are Consumer Key and Secret.
3) I am pasting code for Python script which is used to get the Access Token from the consumer key and secret . This a three way handshake process . Don’t worry abt it.. Use the code i’m pasting here . Filling in the details and run the script . You will be given with a URL . Paste the url in the browser and following instructions to get a PIN . Now, paste the PIN in the command prompt . When the script finishes execution you will be given with the access token . Store it safely.
Script for getting Access Token
import urlparse import oauth2 as oauth consumer_key='' ' # Fill in your key consumer_secret=' ' # Fill in your secret request_token_url='https://api.twitter.com/oauth/request_token' access_token_url='https://api.twitter.com/oauth/access_token' authorize_url='https://api.twitter.com/oauth/authorize' consumer=oauth.Consumer(consumer_key,consumer_secret) client=oauth.Client(consumer) resp, content = client.request(request_token_url, "GET") if resp['status'] != '200': raise Exception("Invalid response %s." % resp['status']) request_token = dict(urlparse.parse_qsl(content)) print "Request Token:" print " - oauth_token = %s" % request_token['oauth_token'] print " - oauth_token_secret = %s" % request_token['oauth_token_secret'] print # Step 2: Redirect to the provider. Since this is a CLI script we do not # redirect. In a web application you would redirect the user to the URL # below. print "Go to the following link in your browser:" print "%s?oauth_token=%s" % (authorize_url, request_token['oauth_token']) # After the user has granted access to you, the consumer, the provider will # redirect you to whatever URL you have told them to redirect to. You can # usually define this in the oauth_callback argument as well. accepted = 'n' while accepted.lower() == 'n': accepted = raw_input('Have you authorized me? (y/n) ') oauth_verifier = raw_input('What is the PIN? ') # Step 3: Once the consumer has redirected the user back to the oauth_callback # URL you can request the access token the user has approved. You use the # request token to sign this request. After this is done you throw away the # request token and use the access token returned. You should store this # access token somewhere safe, like a database, for future use. token = oauth.Token(request_token['oauth_token'],request_token['oauth_token_secret']) token.set_verifier(oauth_verifier) client = oauth.Client(consumer, token) resp, content = client.request(access_token_url, "POST") access_token = dict(urlparse.parse_qsl(content)) #print "Access Token:" print access_token.keys() # Save the output of the script which gives the access token print access_token.values() print "You may now access protected resources using the access tokens above."
4) Once done use the key in ur application . Sample APP
import twitter api = twitter.Api(consumer_key=' ', consumer_secret=' ', access_token_key=' ', access_token_secret=' ') friends=api.PostUpdate("First Tweet from PYTHON APP ")
Authenticating with OAuth is the main part . Once it’s done it’s just child play with python .
PS: I have used python-twitter API . Plz dnt download version 0.6 . Only 0.8 version has OAuth support . It’s still under development so it’s best to do a pull from the source .
sudo hg clone https://python-twitter.googlecode.com/hg/ python-twitter