Previously, DocTest's lineno of functions and methods decorated with
functools.cache(), functools.lru_cache() and functools.cached_property()
was not properly returned (None was returned) because the
computation relied on inspect.isfunction() which does not consider the
decorated result as a function.
We now use the more generic inspect.isroutine(), as elsewhere
in doctest's logic.
Also, added a special case for functools.cached_property().
(cherry picked from commit fece15d29f)
Co-authored-by: Denis Laxalde <denis@laxalde.org>
* Fix a deprecation warning for using importlib.resources.abc.ResourceReader.
* Fix an import warning when importing readline (if it has not yet been imported).
(cherry picked from commit 599be687ec)
Co-authored-by: Thomas Grainger <tagrain@gmail.com>
