Exception question

[Ron Adam]

Steven Bethard wrote:
> Ron Adam wrote:
> 
>>Do exceptions that take place get stored in a stack or list someplace?
> 
> [snip]
> 
>>I know I can catch the error and store it myself with,
>>
>>    except Exception, exc:
>>
>>or possibly,
>>
>>    errlist = []
>>    errlist.append(sys.exc_info())
>>
>>But what I want to know is does the interpreter do that in any way?  And 
>>if so, can I access it?
> 
> 
> No, but there's been some recent talk about having it do so:
> 
> http://mail.python.org/pipermail/python-dev/2005-May/053672.html
> 
> If that happens though, it's not likely to show up before Python 3.0. 
> Too backwards incompatible to do now.  It also seems that the exact 
> semantics haven't yet been agreed upon.
> 
> STeVe

Thanks Steve,

I had actually skimmed over those, but wasn't thinking of this at the 
time. I reread them.  And it clears up a few things.

I had read somewhere that exception objects were global, but that wasn't 
correct, after testing it, they appear to be part of the local frame. 
So once a function exits, any exceptions objects that happened inside 
the function are no longer retrievable.

And checking exception ID's to see if any new exceptions occurred 
doesn't work either, as the numbers get reused too frequently in a short 
period.

Conclusion: Exceptions need to be logged or handled as they occur.

Cheers,
_Ron