[Python-Dev] PEP 479: Change StopIteration handling inside generators

[Guido van Rossum]

In order to save everyone's breath, I am *accepting* the proposal of PEP
479. The transition plan is:

- "from __future__ import generator_stop" in 3.5, and a silent deprecation
if StopIteration is allowed to bubble out of a generator (i.e. no warning
is printed unless you explicitly turn it on)

- non-silent deprecation in 3.6

- feature enabled by default in 3.7

The PEP hasn't been updated to include this and it also could use some more
editing -- I'll try to get to that Monday. But the specification of the
proposal is crystal-clear and I have no doubt that this is the right thing
going forward.

-- 
--Guido van Rossum (python.org/~guido)
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