title: Cannot uninstall 'numpy'
body: <p>I've been trying to install astropy and at the end of the installation I get this message:</p>
  <blockquote>
  <p>Cannot uninstall 'numpy'. It is a distutils installed project and thus
  we cannot accurately determine which files belong to it which would
  lead to only a partial uninstall.</p>
  </blockquote>
  <p>I have tried: <code>pip uninstall numpy</code> and then I get the same message.
  I have Python 2.7.10 in a macOS High Sierra version 13.10.5</p>