On Mar 3, 12:00 pm, Robert Kern <robert.k...@gmail.com> wrote: > On 2010-03-03 09:39 AM, Mike Kent wrote: > > > What's the compelling use case for this vs. a simple try/finally? > > > original_dir = os.getcwd() > > try: > > os.chdir(somewhere) > > # Do other stuff > > finally: > > os.chdir(original_dir) > > # Do other cleanup > > A custom-written context manager looks nicer and can be more readable. > > from contextlib import contextmanager > import os > > @contextmanager > def pushd(path): > original_dir = os.getcwd() > os.chdir(path) > try: > yield > finally: > os.chdir(original_dir) > > with pushd(somewhere): > ...
Robert, I like the way you think. That's a perfect name for that context manager! However, you can clear one thing up for me... isn't the inner try/finally superfluous? My understanding was that there was an implicit try/finally already done which will insure that everything after the yield statement was always executed. -- http://mail.python.org/mailman/listinfo/python-list
