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Tue Feb 10 21:36:03 CET 2009 · https://mail.python.org/pipermail/python-dev/2009-February/085976.html

On Mar, Feb 10, 2009 at 05:38 PM, Daniel Stutzbach wrote:
> On Tue, Feb 10, 2009 at 10:24 AM, Cesare Di Mauro
> <cesare.dimauro at a-tono.com
>> wrote:
>
>> Could it be applyable to other operations as well? So, if I wrote:
>>  c = not(a < b)
>> the compiler and/or peephole optimizer can generate bytecodes
>> instructions
>> which, instead, execute the following operation:
>>  c = a >= b
>>
>
> Those two expressions are equivalent for integers, but not necessarily
> equivalent for objects that define their own comparison operator.

OK, so I can make assumptions only for built-in types.

Thank you

Cesare

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[Python-Dev] Expression optimizations