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copied!<p>At the first glance your app has several issues:</p> <ol> <li>I suppose HOST should be '<a href="http://api.flickr.com" rel="nofollow">http://api.flickr.com</a>'</li> <li>Indentation and formatting (: after if and else) in if-else statement in MainPage class</li> <li>Undefined varibale "photos" in self.response.write(photos)</li> <li>Undefined functions "_prepare_params", "_get_auth_url_suffix", "_get_data" and variable "debug" in _doget function.</li> <li>You should call read() method of urlopen result</li> <li>You should use minidom.parseString</li> <li>You can use run_wsgi_app to run your app</li> </ol> <p>So here is the working example:</p> <pre><code>from google.appengine.ext.webapp.util import run_wsgi_app import webapp2 from urllib import urlencode, urlopen from xml.dom import minidom import hashlib import os HOST = 'http://api.flickr.com' API = '/services/rest' API_KEY = 'my_key' debug = False class MainPage(webapp2.RequestHandler): def get(self): self.response.headers['Content-Type'] = 'text/html' data = _doget('flickr.photos.search', auth=False, text='boston', per_page='2') if data: photos = data.getElementsByTagName("photo") for photo in photos: farm_id = 1 # ??? server_id = photo.attributes['server'].value photo_id = photo.attributes['id'].value secret = photo.attributes['secret'].value photo_url = 'http://farm{farm_id}.staticflickr.com/{server_id}/{photo_id}_{secret}.jpg'.format(farm_id=farm_id, server_id=server_id, photo_id=photo_id, secret=secret) self.response.write('<img src="{0}">'.format(photo_url)) else: self.response.write('Error') def _doget(method, auth=False, **params): #print "***** do get %s" % method params = params url = '%s%s/?api_key=%s&method=%s&%s'% \ (HOST, API, API_KEY, method, urlencode(params)) #another useful debug print statement if debug: print "_doget", url res = urlopen(url) res = res.read() return minidom.parseString(res) application = webapp2.WSGIApplication([('/', MainPage),], debug=True) def main(): run_wsgi_app(application) if __name__ == "__main__": main() </code></pre> <p>To format flickr photo url I used <a href="http://www.flickr.com/services/api/misc.urls.html" rel="nofollow">http://www.flickr.com/services/api/misc.urls.html</a>, but I havent found where to get farm_id parameter, I hope you'll manage it by yourself )</p> <hr> <p>Furthermore, it can be easier to use json format by passing 'format=json' to the API request URL and a bit more properly to use GAE urlfetch service:</p> <pre><code>import json from google.appengine.api import urlfetch # ... class MainPage(webapp2.RequestHandler): def get(self): # ... for photo in data['photos']['photo']: farm_id = 1 # ??? server_id = photo['server'] photo_id = photo['id'] secret = photo['secret'] # ... def _doget(method, auth=False, **params): # ... url = '%s%s/?api_key=%s&method=%s&%s&format=json'% \ (HOST, API, API_KEY, method, urlencode(params)) res = urlfetch.fetch(url).content # Flickr JSON api returns not valid JSON, which wrapped with "jsonFlickrApi(...)", so we get rid of it. if 'jsonFlickrApi(' in res: return res[14:-1] return json.loads(res) </code></pre>

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