title: pip3 --version directory is different than "which pip3"
body: <p>how do i make the <code>which pip3</code> the same directory as <code>pip3 --version</code>?</p>
  
  <p>I have a mac. os sierra. python3.6. i'm having issues with <code>pip3</code>. i would like to continue working in python3.6 without using homebrew or virtual environment.</p>
  
  <p>pip3:</p>
  
  <pre><code>$ which pip3
  /Library/Frameworks/Python.framework/Versions/3.6/bin/pip3
  
  $ pip3 --version
  pip 9.0.1 from /usr/local/lib/python3.6/site-packages (python 3.6)
  </code></pre>
  
  <p>pip:</p>
  
  <pre><code>$ which pip
  /Library/Frameworks/Python.framework/Versions/2.7/bin/pip
  
  $ pip --version
  pip 9.0.1 from /Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages (python 2.7)
  </code></pre>
  
  <p>thank you for your help.</p>