[Python-Dev] Adding a conditional expression in Py3.0 (original) (raw)

Reinhold Birkenfeld reinhold-birkenfeld-nospam at wolke7.net
Sun Sep 25 19:11:30 CEST 2005

Sokolov Yura wrote:

Sorry for looking in every hole. Just a suggestion.

A= condition and first or second problem is in case when first in (None,0,[],""). May be invent new operator 'take'. take - returns right operator when left evals to True and stops computing condidtional expression. Then we could write: A = condition take first or second. A = x==y take w or s A = z is not None and q!=12 take [] or allowable(z,q) take [(z,q)] or "Impossible" Ok, it might looks ugly. But may be not.

One of the advantages of (if x then y else z) is that it doesn't require the introduction of a new keyword (I think the "then" could be special- cased like "as" in the import statement).

Reinhold

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