(Oh hey, I don't understand how I sent the previous email. Mistake with keyboard shortcut in Gmail?) Hi, Sadly, Python 3.5.0 comes with regressions. FYI I fixed the following regressions: "OSError in os.waitpid() on Windows" http://bugs.python.org/issue25118 "Windows: datetime.datetime.now() raises an OverflowError for date after year 2038" http://bugs.python.org/issue25155 "3.5: Include/pyatomic.h is incompatible with OpenMP (compilation of the third-party yt module fails on Python 3.5)" http://bugs.python.org/issue25150 It may be good to not wait too long before releasing a first 3.5.1 bugfix version :-) I just pushed fixes. We may wait a little bit for buildbots ;-) -- There are some more issues which may be Python 3.5 regressions: "Regression: test_datetime fails on 3.5, Win 7, works on 3.4" http://bugs.python.org/issue25092 "asynico: add ssl_object extra info" http://bugs.python.org/issue25114 "test_httpservers hangs on 3.5.0, win 7" http://bugs.python.org/issue25095 Victor