title: Run all Python files in a directory
body: <p>What is the best way to run all Python files in a directory?</p>
  
  <pre><code>python *.py
  </code></pre>
  
  <p>only executes one file. Writing one line per file in a shell script (or make file) seems cumbersome. I need this b/c I have a series of small matplotlib scripts each creating a png file and want to create all of the images at once.</p>
  
  <p>PS: I'm using the bash shell.</p>