code: def less_to_css(style_less):
      
      with fileOpen(tempfile, 'w') as f:
              f.write(style_less)
      os.chdir(package_dir)
      style_css = lesscpy.compile(tempfile)
      style_css += '\n\n'
      return style_css
docs: write less-compiled css file to jupyter_customcss in jupyter_dir