"Guido van Rossum" <[EMAIL PROTECTED]> wrote in message news:[EMAIL PROTECTED] > 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.
I agree. > Given this realization, I'm now -1 on Raymond's idea, There are a lot of people who use 'or', especially, as intended. > and +1 on adding a conditional expression. I believe (y if x else z) > was my favorite last time, wasn't it? No. That was your original proposal, which you later rejected. "The original version of this PEP proposed the following syntax: <expression1> if <condition> else <expression2> The out-of-order arrangement was found to be too uncomfortable for many of participants in the discussion; especially when <expression1> is long, it's easy to miss the conditional while skimming." Your final 'favorite' was apparently (at the top) "Proposal The proposed syntax is as follows: (if <condition>: <expression1> else: <expression2>) " (+ elif parts) selected from "Summary of the Current State of the Discussion Groups are falling into one of three camps: 1. Adopt a ternary operator built using punctuation characters: <condition> ? <expression1> : <expression2> 2. Adopt a ternary operator built using new or existing keywords. The leading examples are: <condition> then <expression1> else <expression2> (if <condition>: <expression1> else: <expression2>) 3. Do nothing." Given the later addition of generator expressions with mandatory parentheses , the mandatory-parentheses version of a conditional expression looks less strange to me than it did then ;-). So I could happily use it even though I may still lean toward the other option 2 version (then-else) due to its not needing ':'s or a third elseif term for chaining. *If* you want general community input, I would suggest a runoff ballot with those four choices (and a summary of pros and cons of each), or fewer if you see any as unacceptible. Terry J. Reedy > -- > --Guido van Rossum (home page: http://www.python.org/~guido/) > _______________________________________________ > Python-Dev mailing list > Python-Dev@python.org > http://mail.python.org/mailman/listinfo/python-dev > Unsubscribe: > http://mail.python.org/mailman/options/python-dev/python-python-dev%40m.gmane.org > > _______________________________________________ Python-Dev mailing list Python-Dev@python.org http://mail.python.org/mailman/listinfo/python-dev Unsubscribe: http://mail.python.org/mailman/options/python-dev/archive%40mail-archive.com