Hi! I just finished porting a large code-base to Python 3 (making it work on 2.6, 2.7 and 3.4). It wasn't that difficult, but one thing gave me a hard time and it was this:
Python 2.7.9 (default, Apr 2 2015, 15:33:21) [GCC 4.9.2] on linux2 Type "help", "copyright", "credits" or "license" for more information. >>> a = np.zeros(7, int) >>> n = a[3] >>> type(n) <type 'numpy.int64'> >>> isinstance(n, int) True With Python 3.4 you get False. I think I understand why (np.int64 is no longer a subclass of int). So, I did this instead: import numbers isinstance(n, numbers.Integral) which works fine (with numpy-1.9). Is this the "correct" way or is there a better way to do it? I would imagine that a lot of code will break because of this - so it would be nice if isinstance(n, int) could be made to work the same way in 2 and 3, but I don't know if this is possible (or desirable). Jens Jørgen _______________________________________________ NumPy-Discussion mailing list NumPy-Discussion@scipy.org http://mail.scipy.org/mailman/listinfo/numpy-discussion
