title: Can't add Python in Windows cmd
body: <p>Firstly this doesn't work:</p>
  
  <pre><code>C:\&gt;python
  'python' is not recognized as an internal or external command, operable program or batch file
  </code></pre>
  
  <p>Then I added .PY, .PYW in pathext so that</p>
  
  <pre><code>C:\echo %pathext%
  .COM;,.EXE;.BAT;.CMD;.VBS;.JS;.JSE;.WSF;.WSH;.MSC;.PY;.PYW
  </code></pre>
  
  <p>Then I tried </p>
  
  <pre><code>C:\assco .py
  File association not found for extension .py
  
  C:\assco .pyw
  File association not found for extension .pyw
  </code></pre>
  
  <p>Anyone could help? I don't know too much about cmd line so I just followed some steps online like <a href="https://stackoverflow.com/questions/1934675/how-to-execute-python-scripts-in-windows">How to execute Python scripts in Windows?</a></p>
  
  <p>However it just didn't work..</p>
  
  <p>My goal is to run Python in cmd line. Could anyone help?</p>