Django template tag for retrieving Stackoverflow reputation score via Py-StackExchange

stackoverflow_rep.py

'''
Template tag for returning Stackoverflow reputation

Requires Py-StackExchange (https://github.com/lucjon/Py-StackExchange/)

This isn't really meant to be consumed as-is for the following reasons:

1. Built in logic for caching isn't ideal for making this distributable
2. Having a template tag reach out to a 3rd party server could cause
   performance issues when rendering a template if the 3rd party server 404s
3. This isn't tested very well
4. I'm new to Python/Django


Enjoy!

Licensed under the MIT license: http://www.opensource.org/licenses/mit-license.php

'''

import logging

from django.core.cache import cache
from django import template

from stackauth import StackAuth 
from stackexchange import Site, StackOverflow

from DevPortfolio.util import is_numeric

logger = logging.getLogger(__name__)

def get_stackoverflow_rep(user_id):
    reputation = cache.get('so_rep');
    if (reputation == None):        
        stack_auth = StackAuth()
        so = Site(StackOverflow, cache=0)
    
        accounts = stack_auth.api_associated(so, user_id)
    
        for account in accounts:
            if (account.on_site.name == 'Stack Overflow'):                    
                reputation = account.reputation
                cache.set('so_rep', reputation)
        
        if (reputation == None):
            reputation = 0;                
                                            
    return reputation

class StackOverflowRepNode(template.Node):
    def __init__(self, user_id):
        self.user_id = user_id
        
    def render(self, context):
        return get_stackoverflow_rep(self.user_id)

def do_stackoverflow_rep(parser, token):
    try:
        tag_name, user_id = token.split_contents()       
    except ValueError:
        raise template.TemplateSyntaxError("%r tag requires a single argument" % token.contents.split()[0])        
    if not is_numeric(user_id):
        raise template.TemplateSyntaxError("%r requires a numeric argument" % tag_name)
    return StackOverflowRepNode(user_id)


register = template.Library()

register.tag('stackoverflow_rep', do_stackoverflow_rep)