Get an OPML File of All Your Public Twitter Lists

I made this simple python script today to get an OPML file (to be imported into Google Reader) of all my Twitter lists.

#!/usr/bin/env python

__version__ = '0.1'
__project_name__ = 'TwitterListOPML'
__project_link__ = 'https://gist.github.com/1051517'

TWITTER_LISTS_URL = "http://api.twitter.com/1/%(username)s/lists.json"
TWITTER_LIST_FEED_URL = "http://api.twitter.com/1/%(username)s/lists/%(list)s/statuses.atom"
TWITTER_LIST_HTML_URL = "http://twitter.com/%(username)s/%(list)s"

OPML_START = """<?xml version="1.0" encoding="UTF-8"?>
<!-- OPML generated by TwitterListOPML -->
<opml version="1.1">
	<head>
		<title>Twitter Lists</title>
	</head>
	<body>
		<outline text="Twitter Lists" title="Twitter Lists">"""
OPML_END = """		</outline>
	</body>
</opml>"""

OPML_OUTLINE_FEED = '<outline text="%(title)s" title="%(title)s" type="rss" version="RSS" htmlUrl="%(html_url)s" xmlUrl="%(xml_url)s" />'

import sys
import urllib2

try:
	import json
except ImportError:
	import simplejson as json

def get_lists(url):
	request = urllib2.Request(url)
	request.add_header('User-Agent', '%s/%s +%s' % (
		__project_name__, __version__, __project_link__
	))
	opener = urllib2.build_opener()
	data = opener.open(request).read()
	return json.loads(data)

def main(username):
	t_lists = get_lists(TWITTER_LISTS_URL % {'username': username})
	
	print OPML_START
	
	for t_list in t_lists['lists']:
		list_title = t_list['name']
		list_html_url = TWITTER_LIST_HTML_URL % {'username': username, 'list': t_list['slug']}
		list_xml_url = TWITTER_LIST_FEED_URL % {'username': username, 'list': t_list['slug']}
		print OPML_OUTLINE_FEED % {'title': list_title, 'html_url': list_html_url, 'xml_url': list_xml_url}
	
	print OPML_END

if __name__ == "__main__":
	username = sys.argv[-1]
	main(username)

Download: twitter_list_to_opml.py.gz