title: Spyder, switching between python 2 and 3
body: <p>I installed the last version of conda, anconda and spyder, that provides python 3.6. Whereas most of my codes can run with python3, some of my libs needs python2.</p>
  
  <p>I assume there is an easy way to change from 3.6 to 2.7 when launching spyder.</p>
  
  <p>From <a href="https://stackoverflow.com/questions/42788383/switch-between-spyder-for-python-2-and-3">Switch between spyder for python 2 and 3</a></p>
  
  <p>I created an environment in python 2.7 using conda, called python2.
  Then, after</p>
  
  <pre><code>source activate python2
  spyder
  </code></pre>
  
  <p>the instance of spyder that launches still show in the console :</p>
  
  <blockquote>
    <p>Python 3.6.4 |Anaconda custom (64-bit)| (default, Jan 16 2018,
    18:10:19)</p>
  </blockquote>
  
  <p>I'm using Spyder 3.2.8, and Conda 4.5.2</p>
  
  <p>I think what I want to do is pretty clear : what is the simplest way to do it ? </p>