code: def get_mod_func(callback):
      """
      splits the string path to a class into a string path to the module
      and the name of the class.
  
      Examples
      ========
  
      >>> from sympy.utilities.source import get_mod_func
      >>> get_mod_func('sympy.core.basic.Basic')
      ('sympy.core.basic', 'Basic')
  
      """
      dot = callback.rfind(".")
      if dot == -1:
          return callback, ""
      return callback[:dot], callback[dot + 1 :]
  
label_desc: Use image node_id 2 for calling a global function with example usage: get_mod_func(callback) and returns: callback,  callback, callback,  str