Nick Coghlan added the comment: I couldn't reproduce this on 3.7, but I can confirm that 3.6 gives a SystemError with the above code:
$ ./python _issue30626.py Traceback (most recent call last): File "_issue30626.py", line 30, in <module> exec("open(__file__)",dct) File "<string>", line 1, in <module> SystemError: <class '_io.TextIOWrapper'> returned NULL without setting an error It's plausible this was fixed as part of the interpreter startup refactoring, so I doubt we're going to able to easily isolate the specific change that fixed it :( ---------- stage: -> needs patch versions: +Python 3.6 _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue30626> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com