Le lundi 30 juillet 2012 à 04:57 +0100, Ronan Lamy a écrit : > Le lundi 30 juillet 2012 à 02:00 +0100, Ronan Lamy a écrit : > > > > > Anyway, I managed to compile (by blanking > > numpy/distutils/command/__init__.py) and to run the tests. I only see > > the 2 pickle errors from your latest gist. So that's all good! > > And the cause of these errors is that running the test suite somehow > corrupts Python's internal cache of bytes objects, causing the > following: > >>> b'\x01XXX'[0:1] > b'\xbb'
The culprit is test_pickle_string_overwrite() in test_regression.py. The test actually tries to check for that kind of problem, but on Python 3, it only manages to trigger it without detecting it. Here's a simple way to reproduce the issue: >>> a = numpy.array([1], 'b') >>> b = pickle.loads(pickle.dumps(a)) >>> b[0] = 77 >>> b'\x01 '[0:1] b'M' Actually, this problem is probably quite old: I can see it in 1.6.1 w/ Python 3.2.3. 3.3 only makes it more visible. I'll open an issue on GitHub ASAP. _______________________________________________ NumPy-Discussion mailing list NumPy-Discussion@scipy.org http://mail.scipy.org/mailman/listinfo/numpy-discussion
