title: how to save data in stl file after python solid processing?
body: <p>I need to process openscad programs on python. I use solid library (<a href="https://solidpython.readthedocs.io/en/latest/index.html" rel="nofollow noreferrer">https://solidpython.readthedocs.io/en/latest/index.html</a>) but I haven't found any method to save data after process. Example</p>
  
  <pre><code>from solid import *
  d = difference()(
     cube(10),
     sphere(15)
  )
  </code></pre>
  
  <p>I need to save <strong>d</strong> variable to stl file. How to do this? And if there's better library, I need advice what library better to use.</p>