Exceptions and locks

[Matthew Dixon Cowles]

On Tue, 10 Apr 2001 18:55:36 +0200, Michael Ströder
<michael at stroeder.com> wrote:

>I'm currently doing something like this code below to make sure that
>locks are released also in case of any exception raised:
>
>my_lock = threading.Lock()
>
>my_lock.acquire()
>try:
>  ..some single action..
>except:
>  my_lock.release()
>  raise
>my_lock.release()
>
>But this looks crude to me. Any more elegant way of doing this?

This is just the sort of situation that the try...finally sequence was
designed for. See:

http://www.python.org/doc/current/ref/try.html

and have a look at the last two paragraphs.

Regards,
Matt