Jeroen Demeyer schrieb am 18.09.2018 um 10:23:

On 2018-09-16 17:48, Stefan Behnel wrote:

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* Cython now emits a warning when no ``language_level`` (2 or 3) is set    explicitly

Currently, language_level=3 breaks a lot of code due to unicode_literals. As I mentioned a few times, it would be good to have a way to specify "language_level=3 except for unicode_literals". Ideally, this option should exist before 0.29 is released.

I can see that this would be helpful. It's unfortunate, though, that this would introduce a temporary option that complicates the current integer "language_level". Meaning, we'd introduce something now that we then can't get rid of for…ever. And it seems to me like a separate directive wouldn't solve this either because it's not really orthogonal to the language level. Any idea? Stefan