On Tue, Sep 8, 2015 at 9:27 PM, Steven D'Aprano <st...@pearwood.info> wrote: > Using if...then statement is too heavyweight, and cannot be used in an > expression. Using "flag and true_value or false_value" is buggy -- it fails > if true_value is itself false. Refactoring it to a function uses eager > rather than lazy evaluation. So there was no existing alternative to a > ternary if expression that worked correctly.
I used to see "(flag and [true_value] or [false_value])[0]" fairly often, which solves the bugginess problem by ensuring that the second term can't be false. Not that I would recommend it over an actual conditional expression. -- https://mail.python.org/mailman/listinfo/python-list
