Hello everybody - my first post! And it may be the most monumentally
stupid question ever asked, but I just can't see an answer after several
hours experimenting, searching and reading.
It's simply this - how can a function determine whether or not it's
being called in handling of an exception (ie. there is an "active"
exception, and somewhere upstream on the stack there is an except: block
statement)?
Depending on what you read, sys.exc_info() is supposed to return
(None,None,None) when there is no active exception, but it seems that it
returns info about the last exception when there isn't one currently
active.
For example:
try:
a = a + 1
except:
pass
print sys.exc_info()
produces:
<class exceptions.NameError at 0x009648D0>, <exceptions.NameError
instance at 0x00B5E508>, <traceback object at 0x00B5E4E0>
Where the traceback object identifies the offending a=a+1 line (of course).
Is there another way of doing this? Note that I can't rely on using
sys.exc_clear() in any solution, unfortunately.
cheers
- John
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