[Python-Dev] cpython: Refactor importlib to make it easier to re-implement in C.

[Antoine Pitrou]

On Thu, 23 Feb 2012 16:18:19 +0100
brett.cannon <python-checkins at python.org> wrote:
>  def _sanity_check(name, package, level):
>      """Verify arguments are "sane"."""
> +    if not hasattr(name, 'rpartition'):
> +        raise TypeError("module name must be str, not {}".format(type(name)))

Why don't you simply use isinstance()?
(bytes objects also have rpartition())

Regards

Antoine.