title: run a python script in terminal without the python command
body: <p>I have a python script let's name it script1.py. I can run it in the terminal this way:</p>
  
  <pre><code>python /path/script1.py
  ...
  </code></pre>
  
  <p>but I want to run like a command-line program:</p>
  
  <pre><code>arbitraryname
  ...
  </code></pre>
  
  <p>how can i do it ?</p>