Digging through the archives (with a quick google search) http://mail.python.org/pipermail/python-ideas/2013-January/019051.html, if you really want an expression it seems you can just dodef stop():raise StopIterationlist(i for i in range(100) if i < 50 or stop())it seems to me that this would provide syntax that doesn't require lambdas.On Fri, Jun 28, 2013 at 4:50 PM, Alexander Belopolsky <alexander.belopolsky@gmail.com> wrote:On Fri, Jun 28, 2013 at 7:38 PM, Shane Green <shane@umbrellacode.com> wrote:..[x until condition for x in l ...] or[x for x in l until condition]Just to throw in one more variation:[expr for item in iterable break if condition](inversion of "if" and "break"reinforces the idea that we are dealing with an expression rather than a statement - compare with "a if cond else b")
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