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From: Paul Rubin <no.email@nospam.invalid>
Newsgroups: comp.lang.python
Subject: Re: raise None
Date: Wed, 30 Dec 2015 16:19:54 -0800
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Steven D'Aprano <steve@pearwood.info> writes:
> def _validate(a, b): 
>     if condition(a) or condition(b): return TypeError
> ...
> Obviously this doesn't work now, since raise None is an error, but if it did
> work, what do you think?

Never occurred to me.  But in some analogous situations I've caught
the exception inside _validate, then peeled away some layers of the
traceback from the exception output before throwing again.