[Python-Dev] "and" and "or" operators in Py3.0
aahz at pythoncraft.com
Tue Sep 20 05:57:38 CEST 2005
On Mon, Sep 19, 2005, Jonathan LaCour wrote:
> Raymond Hettinger:
>> P.S. Simplifying "and" and "or" may create a need to introduce a
>> conditional operator but that is a discussion for another day.
> While I don't disagree with some of your main points, I do think that
> your proposal would eliminate a natural and easy to understand use of
> the current behavior of "or" that I tend to use quite a bit. Your
> proposal would break a lot of code, and I can't think of a better
> "conditional operator" than the one thats already there.
> I often find myself using 'or' to conditionally select a meaningful
> value in the absence of a real value:
> person = Person.fetch(id=5)
> name = person.name or 'John Doe'
> birth_date = person.birth_date or '00-00-0000'
> ssn = person.social_security or 'not provided'
While I'm in philosophical agreement with Raymond, it's also true that my
current company's code is littered with constructs like yours. So I have
to say that it would break too much code.
Aahz (aahz at pythoncraft.com) <*> http://www.pythoncraft.com/
The way to build large Python applications is to componentize and
loosely-couple the hell out of everything.
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