contained in the list returned by :func:`get_suffixes` describing the kind of
module found.
- If the module does not live in a file, the returned *file* is ``None``,
- *pathname* is the empty string, and the *description* tuple contains empty
- strings for its suffix and mode; the module type is indicated as given in
- parentheses above. If the search is unsuccessful, :exc:`ImportError` is
- raised. Other exceptions indicate problems with the arguments or
- environment.
+ If the module is built-in or frozen then *file* and *pathname* are both ``None``
+ and the *description* tuple contains empty strings for its suffix and mode;
+ the module type is indicated as given in parentheses above. If the search
+ is unsuccessful, :exc:`ImportError` is raised. Other exceptions indicate
+ problems with the arguments or environment.
If the module is a package, *file* is ``None``, *pathname* is the package
path and the last item in the *description* tuple is :const:`PKG_DIRECTORY`.