title: Error when using python textblob library tagger
body: <p>I had the textblob library working fine for a while, but decided to install (using easy_install) an additional library (<a href="http://stevenloria.com/tutorial-state-of-the-art-part-of-speech-tagging-in-textblob/" rel="nofollow">page here</a>) claiming faster and more accurate tagging.</p>
  
  <p>I couldn't get it working so I uninstalled it, but it seems to have messed with the tagging function in TextBlob. I've uninstalled and reinstalled both nltk and TextBlob numerous times with both pip and easy_install, and made sure they're up to date. </p>
  
  <p>Here is an example of a simple script which generates the error:</p>
  
  <pre><code>from textblob import TextBlob
  
  blob = TextBlob("This is a sentence")
  print repr(blob.tags)
  </code></pre>
  
  <p>and the error printed:</p>
  
  <pre><code>    Traceback (most recent call last):
    File "tesst.py", line 5, in &lt;module&gt;
      print repr(blob.tags)
    File "C:\Users\Emmet\Anaconda\lib\site-packages\textblob\decorators.py", line 24, in __get__
      value = obj.__dict__[self.func.__name__] = self.func(obj)
    File "C:\Users\Emmet\Anaconda\lib\site-packages\textblob\blob.py", line 445, in pos_tags
      for word, t in self.pos_tagger.tag(self.raw)
    File "C:\Users\Emmet\Anaconda\lib\site-packages\textblob\decorators.py", line 35, in decorated
      return func(*args, **kwargs)
    File "C:\Users\Emmet\Anaconda\lib\site-packages\textblob\en\taggers.py", line 34, in tag
      tagged = nltk.tag.pos_tag(text)
    File "C:\Users\Emmet\Anaconda\lib\site-packages\nltk\tag\__init__.py", line 110, in pos_tag
      tagger = PerceptronTagger()
    File "C:\Users\Emmet\Anaconda\lib\site-packages\nltk\tag\perceptron.py", line 141, in __init__
      self.load(AP_MODEL_LOC)
    File "C:\Users\Emmet\Anaconda\lib\site-packages\nltk\tag\perceptron.py", line 209, in load
      self.model.weights, self.tagdict, self.classes = load(loc)
    File "C:\Users\Emmet\Anaconda\lib\site-packages\nltk\data.py", line 801, in load
      opened_resource = _open(resource_url)
    File "C:\Users\Emmet\Anaconda\lib\site-packages\nltk\data.py", line 924, in _open
      return urlopen(resource_url)
    File "C:\Users\Emmet\Anaconda\lib\urllib2.py", line 154, in urlopen
      return opener.open(url, data, timeout)
    File "C:\Users\Emmet\Anaconda\lib\urllib2.py", line 431, in open
      response = self._open(req, data)
    File "C:\Users\Emmet\Anaconda\lib\urllib2.py", line 454, in _open
      'unknown_open', req)
    File "C:\Users\Emmet\Anaconda\lib\urllib2.py", line 409, in _call_chain
      result = func(*args)
    File "C:\Users\Emmet\Anaconda\lib\urllib2.py", line 1265, in unknown_open
      raise URLError('unknown url type: %s' % type)
  urllib2.URLError: &lt;urlopen error unknown url type: c&gt;
  </code></pre>
  
  <p>You can see that the error actually mentions the perceptron tagger. Is there any way to more thoroughly remove any references there may be to the alternate tagger?</p>
  
  <p>Also note that only the "tags" function has been affected.</p>