[Python-Dev] Adding a conditional expression in Py3.0

Michael Hudson mwh at python.net
Tue Sep 20 18:34:23 CEST 2005

Guido van Rossum <guido at python.org> writes:

> Unfortunately, if we were to accept Raymond's proposal, we'd have to
> revisit the discussion, since his proposal removes several ways we
> currently avoid the need.
> In fact, I think Raymond's example is more properly considered an
> argument for adding a conditional expression than for removing the
> current behavior of the and/or shortcut operators; had we had a
> conditional expression, he wouldn't have tried to use the "x and y or
> z" syntax that bit him.


> Given this realization, I'm now -1 on Raymond's idea, and +1 on adding
> a conditional expression. I believe (y if x else z) was my favorite
> last time, wasn't it? I've changed the subject accordingly.

It's not the version from the PEP, if that means anything at all...


34. The string is a stark data structure and everywhere it is
    passed there is much duplication of process.  It is a perfect
    vehicle for hiding information.
  -- Alan Perlis, http://www.cs.yale.edu/homes/perlis-alan/quotes.html

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