For review: PEP 308 - If-then-else expression

Roy Smith roy at
Sun Feb 9 20:17:26 CET 2003

Piet van Oostrum <piet at> wrote:

> This would cause a subtle problem, which by the way is now also present if
> someone confuses the parentheses:
> If b is a variable that takes only 0 and 1 as values then
> b -> (x, y) is the same as
> b -> [y, x]
> because with boolean conditionals people are used to have the true clause
> first. And we shouldn't change that.

That is an excellent point.

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