[Python-Dev] PEP 8: exception style

[Michael Hudson]

Guido van Rossum <gvanrossum at gmail.com> writes:

> On 8/6/05, A.M. Kuchling <amk at amk.ca> wrote:
>> PEP 8 doesn't express any preference between the
>> two forms of raise statements:
>> raise ValueError, 'blah'
>> raise ValueError("blah")
>> 
>> I like the second form better, because if the exception arguments are
>> long or include string formatting, you don't need to use line
>> continuation characters because of the containing parens.  Grepping
>> through the library code, the first form is in the majority, used
>> roughly 60% of the time.
>> 
>> Should PEP 8 take a position on this?  If yes, which one?
>
> Definitely ValueError('blah'). The other form will go away in Python
> 3000. Please update the PEP.

How do you then supply a traceback to the raise statement?

Cheers,
mwh

-- 
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