title: Python: No module named sphinx error
body: <p>I have followed following <a href="https://docs.readthedocs.io/en/latest/getting_started.html" rel="nofollow noreferrer">guide</a>.</p>
  
  <pre><code>$ pip install sphinx sphinx-autobuild
  $ pip freeze | grep "sphinx"
  sphinx-autobuild==0.6.0
  sphinxcontrib-websupport==1.0.0
  
  $ cd docs
  $ sphinx-quickstart
  $ make html
  </code></pre>
  
  <p><code>make html</code> gives following error: </p>
  
  <pre><code>/Library/Frameworks/Python.framework/Versions/2.7/Resources/Python.app/Contents/MacOS/Python: No module named sphinx
  make: *** [help] Error 1
  </code></pre>
  
  <p><strong>[Q]</strong> How could I prevent this error from happening?</p>
  
  <p>Thank you for your valuable time and help.</p>