title: making a commandline alias to a python file in a pipenv project
body: <p>I've been making a python project using pipenv, and I want to be able to run it in a terminal from any location on my (linux) system.
  Specifically, say I have the following directory structure:</p>
  
  <pre><code>/home
    /project
      Pipfile
      main.py
    /other_dir
  </code></pre>
  
  <p>I would like to be able to make an alias that allows me to call <code>main.py</code> like so:</p>
  
  <pre><code> /home/other_dir$ alias_to_my_proyect --some args
  </code></pre>
  
  <p>and run it in the virtual env, having the same behaviour as</p>
  
  <pre><code>/home/project$ pipenv run python main.py
  </code></pre>
  
  <p>But in another directory.</p>
  
  <p>If it weren't a pipenv project, I'd just use a shebang a the start of the file and then add an alias to it in my .bashrc, but I want to use pipenv's virtual environment, but I cant find a way to do this with pipenv.</p>