title: Cmd Windows "python" command works, but "python3" doesn't although my python version is 3.6
body: <p>So I have followed a couple of posts here such as <a href="https://stackoverflow.com/questions/17953124/python-is-not-recognized-as-an-internal-or-external-command">this</a>.</p>
  
  <p>So I have installed python 3.6 with Anaconda. Then I went into the PATH and I inserted the path to Python.  </p>
  
  <p>So now when I type into the cmd "python" I get the response</p>
  
  <pre><code>Python 3.6.3 |Anaconda custom (64-bit)| (default, Oct 15 2017, 03:27:45) [MSC v.1900 64 bit (AMD64)] on win32
  Type "help", "copyright", "credits" or "license" for more information.
  &gt;&gt;&gt;
  </code></pre>
  
  <p>However if I type in "python3" I get the usual problem </p>
  
  <pre><code>'python3' is not recognized as an internal or external command,
  operable program or batch file.
  </code></pre>
  
  <p>Why is that?</p>