Tweet from your terminal.

.twitter.config-example.json

{
    "oauth_consumer_key": "XXX",
    "oauth_consumer_secret": "XXX",
    "access_token": "XXX",
    "access_token_secret": "XXX"
}

Readme.md

Step 1

pip install tweepy  
wget --no-check-certificate -O ~/.twitter https://raw.github.com/gist/3986575/.twitter.config-example.json  
wget --no-check-certificate -O /usr/local/bin/twitter https://raw.github.com/gist/3986575/twitter.py && chmod +x /usr/local/bin/twitter

Step 2: Create a new twitter app at https://dev.twitter.com/apps

Step 3: Set OAuth keys and access tokens from your new app in ~/.twitter

Step 4: Test it

$ twitter
Syntax: twitter "Your tweet."

twitter.py

#!/usr/bin/env python
"""
  Tweet from your terminal.

  Create in your home directory a file named ".twitter" as showed in the example.
  You can get the OAuth keys and access tokens from https://dev.twitter.com/apps
"""

import os.path, sys, tweepy, json

try :
    message     = sys.argv[1]
except IndexError as err:
    sys.exit("Syntax: " + os.path.basename(__file__) +" \"Your tweet.\"")

if len(message) > 140:
    sys.exit("Your message was longer than 140 characters...")
elif len(message) == 0:
    sys.exit("Message not long enough!")
    

cfg_file    = open(os.path.expanduser('~') + "/.twitter");
config      = json.load(cfg_file);

consumer_key = config['oauth_consumer_key']
consumer_secret = config['oauth_consumer_secret']

access_token = config['access_token']
access_token_secret = config['access_token_secret']

auth = tweepy.OAuthHandler(consumer_key, consumer_secret)
auth.set_access_token(access_token, access_token_secret)

api = tweepy.API(auth)

print "Twitter.com: Hello " + api.me().name
api.update_status(message)