Python standalone script to post message in identi.ca

post.py

#! /usr/bin/env python
# -*- encoding: utf-8 -*-
# vim:fenc=utf-8:

import urllib, urllib2, json, sys, os
import getpass

config_file = os.path.join(os.environ["HOME"],".postrc")

try:
    username, password  = tuple(map(lambda x:x.rstrip("\n"),file(config_file).readlines()))
except:
    print "No configuration provided in ~/.postrc."
    print "Falling back to interactive"
    username = raw_input("Username: ")
    password = getpass.getpass("Password: ")

def formatAtom(atom):
    atom = atom.strip()
    if atom.startswith('http://') or atom.startswith('https://'):
        data = urllib.urlopen("http://ur.ly/new.json?href=%s" % urllib.quote(atom)).read()
        return "http://ur.ly/%s" % json.loads(data)['code']
    return atom

if len(sys.argv) == 1:
    print "Usage: %s <your message>" % sys.argv[0]
    sys.exit(1)

# join all parts if command line option was not quoted
msg = " ".join(sys.argv[1:])

# get all of the atoms in the string
atoms = filter(lambda x: len(x.strip()) > 0, msg.split())

# format the atoms and join then back together
msg = " ".join(map(formatAtom, atoms))

if len(msg) > 140:
    print "Your message was %i characters too long." % (len(msg) - 140)
    sys.exit(1)

url = "http://identi.ca/api/statuses/update.xml"
passman = urllib2.HTTPPasswordMgrWithDefaultRealm()
passman.add_password(None, url, username, password)
authhandler = urllib2.HTTPBasicAuthHandler(passman)
opener = urllib2.build_opener(authhandler)
opener.open(urllib2.Request(url, urllib.urlencode({'status': msg})))
print "Posted: %s" % msg