code: def create_args(args, root):
      
  
      extension_args = {}
  
      for arg in args:
          parse_extension_arg(arg, extension_args)
  
      for name in sorted(extension_args, key=len):
          path = name.split('.')
          update_namespace(root, path, extension_args[name])
docs: Encapsulates a set of custom command line arguments in key=value
      or key.namespace=value form into a chain of Namespace objects,
      where each next level is an attribute of the Namespace object on the
      current level
  
      Parameters
      ----------
      args : list
          A list of strings representing arguments in key=value form
      root : Namespace
          The top-level element of the argument tree