title: Python: LookupError: unknown encoding: cp0
body: <p>I am trying to execute a simple nltk code: <code>nltk.sent_tokenize(text)</code> and am getting error <code>LookupError: unknown encoding: cp0</code>. I tried typing in <code>chcp</code> in my IPython Console and I am getting the same error. </p>
  
  <p>I am working on Windows10 desktop, executing Python code over Miniconda > Spyder IDE. I have Python 2.7 installed. </p>