code: def setup(app):
      app.add_css_file("css/custom.css")
      app.add_js_file("js/pk_scripts.js")
  
imports: import os
  import re
  import sys
  import glob
  import sphinx_book_theme
  from package_info import __version__
label_desc: Use image node_id 1 for calling a global function with example usage: setup(app) without return types