ElementTree.

Patch by Jeffrey Armstrong.

doc.  Remove obsolete example from FAQ.  Patch by Martin Panter.

Made test_pprint discoverable.

Patch by Martin Panter, reviewed by Serhiy Storchaka and R. David Murray.

Patch by Vinod Kurup.

Previous approach of installing coroutine wrapper in loop.set_debug() and
uninstalling it in loop.close() was very fragile.  Most of asyncio tests
do not call loop.close() at all.  Since coroutine wrapper is a global
setting, we have to make sure that it's only set when the loop is
running, and is automatically unset when it stops running.

Issue #24017.

Changes:

* Fixed a ResourceWarning warning
* Used argparse instead of getopt

if they called on a closed object.

Patch by John Hergenroeder.

Patch from Marc-Andre Lemburg.