myflickr.py

from django.utils import simplejson as json
from google.appengine.api import urlfetch

class MyFlickr(object):
  """A simple class for dealing with flickr via the API"""
  def __init__(self, api_key):
    super(MyFlickr, self).__init__()
    self.api_key = api_key
    self.api_host = "http://api.flickr.com/services/rest/"
  
  def default_args(self, method):
    return {
            "method": method,
            "api_key": self.api_key,
            "format": "json",
            "nojsoncallback": 1,
           }
           
  def url_for_method(self, method, args={}):
    qs = ""
    url_args = self.default_args(method)
    url_args.update(args)
    for key in url_args:
      qs += key + "=" + str(url_args[key]) + "&"
    
    return self.api_host + "?" + qs
  
  def call(self, method, args={}):
    result = urlfetch.fetch(self.url_for_method(method, args))
    return json.loads(result.content)
  
  def get_photos(self, resp):
    if resp["stat"] == "fail":
      return "Error: " + resp["message"]
    else:
      return resp["photos"]["photo"]
  
  def interesting(self, page=1):
    photos = self.call("flickr.interestingness.getList", {"page": page})
    return self.get_photos(photos)