[Python-Dev] Py_TPFLAGS_HEAPTYPE too overloaded
Nick Coghlan
ncoghlan at gmail.com
Tue Jul 28 13:29:54 CEST 2009
Nick Coghlan wrote:
> One specific example I can think of is that object.__hash__ is special
> cased in a few places due to the way its definition interacts with the
> definition of comparison operations. Allowing changes to the contents of
> object's tp_hash slot could lead to much weirdness when it came to
> __hash__ inheritance.
Just thought of a much better example as I clicked send: the basic
numeric types (especially int) are locked down because they are
special-cased all over the place (including in the main interpreter eval
loop) in order to speed up simple arithmetic.
Cheers,
Nick.
--
Nick Coghlan | ncoghlan at gmail.com | Brisbane, Australia
---------------------------------------------------------------
More information about the Python-Dev
mailing list