12,13d11
< if twisted.copyright.version >= '2.0.0' or twisted.copyright.version >= '10.0.0':
<     from twisted.internet.selectreactor import SelectReactor
16,17c14,19
< #    from twisted.internet.selectreactor import _NO_FILENO
< #    from twisted.internet.selectreactor import _NO_FILEDESC
---
> if twisted.copyright.version >= '11.1.0':
>     from twisted.internet.selectreactor import SelectReactor
>     from twisted.internet.posixbase import _NO_FILENO
>     from twisted.internet.posixbase import _NO_FILEDESC
> elif twisted.copyright.version >= '2.0.0' or twisted.copyright.version >= '10.0.0':
>     from twisted.internet.selectreactor import SelectReactor