[docs] [issue28697] asyncio.Lock, Condition, Semaphore docs don't mention `async with` syntax

New submission from Ulrich Petri: The docs for asyncio's Lock, Condition and Semaphore should use the new clean `async with lock:` syntax instead of the older (and IMO rather ugly) `with (yield from lock):` version. ---------- assignee: docs@python components: Documentation, asyncio messages: 280861 nosy: docs@python, gvanrossum, ulope, yselivanov priority: normal severity: normal status: open title: asyncio.Lock, Condition, Semaphore docs don't mention `async with` syntax versions: Python 3.5, Python 3.6, Python 3.7 _______________________________________ Python tracker <report@bugs.python.org> <http://bugs.python.org/issue28697> _______________________________________