Sitic added a comment.
So the
exception UnsupportedOperation('fileno',) while fixing up sys.stdout and sys.stderr
from the report I linked is unrelated? I was wondering about that (but also misread one of them as stdin).
I didn't want to say there that Python 3 support is "partial", but rather that the support for is isn't as matured/in longtime use as for 2.7.
TASK DETAIL https://phabricator.wikimedia.org/T91921
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To: Sitic Cc: gerritbot, XZise, Sitic, Aklapper, Dalba, jayvdb, pywikipedia-bugs