Trying to add new IE

[yasoob]

I am trying to add an IE for hypem.com but i am facing some problems. Here is my code (Its test code)
'''
class HypemIE(InfoExtractor):
"""Information Extractor for hypem"""
_VALID_URL = r'(?:http://)?(?:www.)?hypem.com/track/([^/]+)/([^/]+)'

def removeDisallowedFilenameChars(filename):
    validFilenameChars = "-_.() %s%s" % (string.ascii_letters, string.digits)
    cleanedFilename = unicodedata.normalize('NFKD', filename).encode('ASCII', 'ignore')
    return ''.join(c for c in cleanedFilename if c in validFilenameChars)

def _real_extract(self,url):
    mobj = re.match(self._VALID_URL, url)
    if mobj is None:
        raise ExtractorError(u'Invalid URL: %s' % url)
    data = {'ax':1 ,
              'ts': time()
          }
    data_encoded = urllib.urlencode(data)
    complete_url = url + "?"+data_encoded
    request = urllib2.Request(complete_url)
    response = urllib2.urlopen(request)
    #save our cookie
    cookie = response.headers.get('Set-Cookie')
    #grab the HTML
    html = response.read()
    response.close()
    track_list = []
    list_data = re.search(r'<script type="application/json" id="displayList-data">\n    (.*)    </script>',html)
    html_tracks = list_data.group(1)
    if html_tracks is None:
      tracks = track_list
    try:
      track_list = json.loads(html_tracks)
      tracks = track_list[u'tracks']
    except ValueError:
      print "Hypemachine contained invalid JSON."
      tracks =  track_list

    for track in tracks:
        key = track[u"key"]
        id = track[u"id"]
        artist = removeDisallowedFilenameChars(track[u"artist"])
        title = removeDisallowedFilenameChars(track[u"song"])
        type = track[u"type"]
    if type is False:
        continue
    serve_url = "http://hypem.com/serve/source/{}/{}".format(id, key)
    request = urllib2.Request(serve_url, "" , {'Content-Type': 'application/json'})
    request.add_header('cookie', cookie)
    response = urllib2.urlopen(request)
    song_data_json = response.read()
    response.close()
    song_data = json.loads(song_data_json)
    final_url = song_data[u"url"]
    return [{
        'id':       id,
        'url':      final_url,
        'ext':      "mp3",
        'title':    title,
        'artist':   artist,
    }]

'''
and i also added "HypemIE()" in "gen_extractors()" . The problem is that whenever i give it a hypem url it falls back to genericIE instead of using HypemIE. The input which i gave is:

python youtube_dl/main.py http://hypem.com/track/1q6dr/Rone+-+Parade
The traceback for the error is:
'''
Traceback (most recent call last):
File "youtube_dl/main.py", line 18, in
youtube_dl.main()
File "/usr/local/lib/python2.6/dist-packages/youtube_dl-2013.03.29-py2.6.egg/youtube_dl/init.py", line 540, in main
_real_main()
File "/usr/local/lib/python2.6/dist-packages/youtube_dl-2013.03.29-py2.6.egg/youtube_dl/init.py", line 524, in _real_main
retcode = fd.download(all_urls)
File "/usr/local/lib/python2.6/dist-packages/youtube_dl-2013.03.29-py2.6.egg/youtube_dl/FileDownloader.py", line 569, in download
videos = ie.extract(url)
File "/usr/local/lib/python2.6/dist-packages/youtube_dl-2013.03.29-py2.6.egg/youtube_dl/InfoExtractors.py", line 96, in extract
return self._real_extract(url)
File "/usr/local/lib/python2.6/dist-packages/youtube_dl-2013.03.29-py2.6.egg/youtube_dl/InfoExtractors.py", line 1389, in _real_extract
if self._test_redirect(url): return
File "/usr/local/lib/python2.6/dist-packages/youtube_dl-2013.03.29-py2.6.egg/youtube_dl/InfoExtractors.py", line 1378, in _test_redirect
response = opener.open(HeadRequest(url))
File "/usr/lib/python2.6/urllib2.py", line 397, in open
response = meth(req, response)
File "/usr/lib/python2.6/urllib2.py", line 510, in http_response
'http', request, response, code, msg, hdrs)
File "/usr/lib/python2.6/urllib2.py", line 429, in error
result = self._call_chain(_args)
File "/usr/lib/python2.6/urllib2.py", line 369, in _call_chain
result = func(_args)
File "/usr/lib/python2.6/urllib2.py", line 616, in http_error_302
return self.parent.open(new, timeout=req.timeout)
File "/usr/lib/python2.6/urllib2.py", line 397, in open
response = meth(req, response)
File "/usr/lib/python2.6/urllib2.py", line 510, in http_response
'http', request, response, code, msg, hdrs)
File "/usr/lib/python2.6/urllib2.py", line 429, in error
result = self._call_chain(_args)
File "/usr/lib/python2.6/urllib2.py", line 369, in _call_chain
result = func(_args)
File "/usr/lib/python2.6/urllib2.py", line 616, in http_error_302
return self.parent.open(new, timeout=req.timeout)
File "/usr/lib/python2.6/urllib2.py", line 397, in open
response = meth(req, response)
File "/usr/lib/python2.6/urllib2.py", line 510, in http_response
'http', request, response, code, msg, hdrs)
File "/usr/lib/python2.6/urllib2.py", line 435, in error
return self._call_chain(_args)
File "/usr/lib/python2.6/urllib2.py", line 369, in _call_chain
result = func(_args)
File "/usr/lib/python2.6/urllib2.py", line 518, in http_error_default
raise HTTPError(req.get_full_url(), code, msg, hdrs, fp)
urllib2.HTTPError: HTTP Error 404: Not Found
'''

I hope that you guys can help me. Any useful comments on my IE code are also welcome.

[jaimeMF]

Did you add HypemIE() before genericIE?

[jaimeMF]

If you want further help, you can open a branch in your fork so that we can comment and test the code.

[yasoob]

@jaimeMF Heres my fork in which i added hypem https://github.com/yasoob/youtube-dl i hope you can test it and provide me with some help.

[yasoob]

an example hypem url is http://hypem.com/track/1x36n/a+k+u+a+-+One%27s+company