[issue8800] add threading.RWLock

[Richard Oudkerk]

Richard Oudkerk added the comment:

> With this, you are stuck with employing a context manager model only.  
> You loose the flexibility to do explicit acquire_read() or 
> acquire_write().

You are not restricted to the context manager model.  Just use selock.shared.acquire() or selock.exclusive.acquire().

----------

_______________________________________
Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue8800>
_______________________________________