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Thu Mar 1 00:45:17 CET 2007 · https://mail.python.org/pipermail/python-dev/2007-March/071426.html

glyph at divmod.com wrote:

> Or modify __new__ on your particular heavily-optimized
> exception to have a free-list,

Doing that in Python is likely to have as much overhead as
creating an instance.

The simple and obvious optimisation is to pre-create the
instance, but we're proposing to make the obvious way
wrong for subtle reasons. That doesn't seem pythonic
to me.

--
Greg

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[Python-Dev] with_traceback