Dealing with exceptions

Steven D'Aprano steve+comp.lang.python at pearwood.info
Sun Mar 3 01:41:09 CET 2013


On Sat, 02 Mar 2013 18:52:19 +0100, Kwpolska wrote:

> Also, you can do `except:` for a catch-all, but it is discouraged unless
> you have REALLY good reasons to do this.  And, most of the time, you
> don’t.


`except Exception` is to be much preferred over a bare except. It 
excludes KeyboardInterruptError (the user hits Ctrl-C) and SystemExit, 
which you normally either want to let through, or handle separately.


But yes, in general, only catch the minimum you *know* you need to catch 
and can deal with. Anything else is a bug in your code that needs to be 
fixed, and you can't fix it if you never see the exception.



-- 
Steven



More information about the Python-list mailing list