On 11/17/2014 03:11 AM, Chris Angelico wrote:
On Mon, Nov 17, 2014 at 12:58 PM, Guido van Rossum firstname.lastname@example.org wrote:
I agree with you and Steven that this is a fine use of __future__. What a generator does with a StopIteration that is about to bubble out of its frame is up to that generator. I don't think it needs to be a flag on the *function* though -- IMO it should be a flag on the code object. (And the flag should somehow be transferred to the stack frame when the function is executed, so the right action can be taken when an exception is about to bubble out of that frame.)
One other small point: let's change the PEP to just propose RuntimeError, and move the "some other exception" to the "rejected ideas" section.
Changes incorporated, thanks! I'm not familiar with the details of stack frame handling, so I've taken the cop-out approach and just quoted you directly into the PEP.
I fixed a typo and syntax and made a content clarification ("generator constructed" -> "generator function constructed"; the generator object itself is constructed when the function is called) and committed the changes.