[Numpy-discussion] numscons and Python 2.7 problems

Ralf Gommers ralf.gommers@googlemail....
Mon Jun 7 21:37:21 CDT 2010

On Tue, Jun 8, 2010 at 4:58 AM, Charles R Harris

> On Mon, Jun 7, 2010 at 2:07 PM, Christoph Gohlke <cgohlke@uci.edu> wrote:
>> Dear NumPy developers,
>> I was trying to build numpy 2.0.dev and scipy 0.9.dev using numscons
>> 0.12.dev and Python 2.7b2 (32 bit) on Windows 7 64 bit and ran into two
>> problems.
>> First, Python 2.7's UserDict is now a new-style class
>> (http://docs.python.org/dev/whatsnew/2.7.html). Apparently scons 1.2,
>> which is part of numscons, is not compatible with this change and an
>> AttributeError is thrown:
> I wonder sometimes if it is worth supporting python versions 2.x > 2.6. The
> developers seem intent on breaking the API as much as possible and support
> could become a burden. At least 3.x has a policy of keeping the API intact.
> I'm only half joking here,.
> Is it really that much worse than for earlier versions? The support burden
is probably more because of having too many Python versions at the same
time. It's now 2.4-2.6, soon it may be 2.4-2.7 + 3.1-3.2.

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