code: def get_ipython():
      """Get the global InteractiveShell instance.
  
      Returns None if no InteractiveShell instance is registered.
      """
      from IPython.core.interactiveshell import InteractiveShell
  
      if InteractiveShell.initialized():
          return InteractiveShell.instance()
  
label_desc: Use image node_id 1 for calling a global function with example usage: get_ipython() and returns: InteractiveShell