PEP 315 has now been explicitly rejected: the official syntax for terminating a loop early is the existing break statement, thus any proposal for terminating a (Nick means terminating a 'for' loop; there is a place to shove a conditional in the 'while' loop syntax.) I think the (informational) PEP should reflect that this is contrary to early notions of structured programming (MISRA-1998) but is in accord with updated notions (MISRA-2004, MISRA-2012). I understand and appreciate
Nick wrote: that many python programmers think this may be silly, but structured programming had a big impact on the computer science committee and some acknowledgement of this is, in my view, warranted. Plus, by citing the later MISRA-2004, it leaves the Python implementation in the free and clear.
I think the idea of early termination of comprehensions has a *much* better chance of getting Guido's interest if it helps make the behaviour of else clauses on loops more comprehensible without needing
It looks like this has happened.