Ah, thanks. I'll have to break out gdb for that! thanks, -steve
> On Dec 22, 2014, at 11:28 AM, Robert Kern <[email protected]> wrote: > > On Mon, Dec 22, 2014 at 10:35 AM, Steve Spicklemire <[email protected]> wrote: > > > > I’m working on visual python (http://vpython.org) which lists numpy among > > its dependencies. > > > > I recently updated my numpy installation to 1.9.1 and I’m now encountering > > this error: > > > > /usr/local/Cellar/python/2.7.8_2/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/VPython-6.10-py2.7-macosx-10.10-x86_64.egg/visual_common/materials.py:70: > > FutureWarning: comparison to `None` will result in an elementwise object > > comparison in the future. > > self.__setattr__(key, value) > > > > Oddly, the code in question looks like this: > > > > > > 62 from . import cvisual > > 63 from numpy import array, reshape, fromstring, ubyte, ndarray, > > zeros, asarray > > 64 import os.path, math > > 65 > > 66 class raw_texture(cvisual.texture): > > 67 def __init__(self, **kwargs): > > 68 cvisual.texture.__init__(self) > > 69 for key, value in kwargs.items(): > > 70 self.__setattr__(key, value) > > The answer is in the implementation of cvisual.texture somewhere. This is > Boost.Python C++ code, so there's a fair bit of magic going on such that I > can't pinpoint the precise line that's causing this, but I suspect that it > might be this one: > > https://github.com/BruceSherwood/vpython-wx/blob/master/src/python/numeric_texture.cpp#L258 > > When `data` is assigned, this line checks if the value is None so that it can > raise an error to tell you not to do that (I believe, from the context, that > `py::object()` is the Boost.Python idiom for getting the None singleton). I > *think*, but am not positive, that Boost.Python converts the C++ == operator > into a Python == operation, so that would trigger this FutureWarning. > > So VPython is the code that needs to be fixed to do an identity comparison > with None rather than an equality comparison. > > -- > Robert Kern
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