Latest tweets Templatetag

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import twitter
from django.core.cache import cache
from django.conf import settings

register = Library()
class TwitterLattestMsgNode(Node):
    def __init__(self, user, limit, tweets):
        self.tweets = tweets
        self.user = user
        self.limit = int(limit)

    def render(self, context):
        cache_key = "latest_tweets_%s_%d" % (self.user, self.limit)
        cached_elems = cache.get(cache_key, None)
        if cached_elems:
            context[self.tweets] = cached_elems
        else:
            try:
                api = twitter.Api()
                status_obj = api.GetUserTimeline(self.user)
                most_recent_messages = [{"text":s.text, 
                                     "time":s.relative_created_at, 
	                                 "url": "http://twitter.com/%s/statuses/%s" % (self.user, s.id),}  \
	                                 for s in status_obj][:self.limit]
                context[self.tweets] = most_recent_messages
		cache.set(cache_key, most_recent_messages, settings.get.("TWITTER_TIMEOUT", 300))
            except:
                context[self.tweets] = {
                    "error": "Ack! Looks like Twitter's codes are broken!",
                }
        return ''

@register.tag(name='get_twitter_messages')
def twitter_status(parser, token):
	"""
	Call this tag with: 
		get_twitter_status as tweet
	"""
	bits = token.split_contents()

	if len(bits) != 7:
			raise TemplateSyntaxError, "%s takes 7 arguments" % bits[0]	
	if bits[1] != "user":
		raise TemplateSyntaxError, "First argument for %s should be 'user'" % bits[0]
	
	if bits[3] != "limit":
		raise TemplateSyntaxError, "Second argument for %s should be 'limit'" % bits[0]
		
	if bits[5] != "as":
		raise TemplateSyntaxError, "Third argument for %s should be 'as'" % bits[0]
		
	return TwitterLattestMsgNode(bits[2], bits[4], bits[6])

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