code: def _substitute(readme):
      readme = (
          readme.replace("_static", "docs/_static")
          .replace(".. testcode::", ".. code-block:: python")
          .replace(".. testoutput::\n   :hide:", "")
      )
  
      return readme
  
label_desc: Use image node_id 2 for calling a global function with example usage: _substitute(readme) and returns: readme