title: Equivalent of strace -feopen < command > on mac os X
body: <p>This is useful for debugging (hence programming related).  On linux, we can use the command</p>
  
  <pre><code>strace -feopen python myfile.py
  </code></pre>
  
  <p>to figure out which python modules and shared objects are loaded.  Is there an equivalent one-liner on macOS X?</p>