[Python-Dev] syntax warnings don't go through warnings.warn?

Michael Foord fuzzyman at voidspace.org.uk
Mon Jun 1 19:42:24 CEST 2009

Matthew Wilkes wrote:
> On 1 Jun 2009, at 17:50, Dino Viehland wrote:
>> I’m just a little surprised by this - Is there a reason why syntax 
>> warnings are special and untrappable via warnings.warn?
> Why should this work?  From the docs... "Python programmers issue 
> warnings by calling the warn() function defined in this module. (C 
> programmers use PyErr_WarnEx; see Exception Handling for details)."
> Check out the warnings.catch_warnings context manager, but if you have 
> any further questions please direct them to the normal Python mailing 
> list, this is for development _of_ Python only.

Dino is developing Python - he's one of the core developers of 
IronPython and I suspect he is asking whether this is intentional, and 
IronPython should implement the same behaviour, or whether it is a bug.


> Matthew
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