[scikit-learn] Fwd: ValueError

[Sebastian Raschka]

Oh that’s interesting, thanks for the info! I have never used the system Python and didn’t know that it comes with its own NumPy & SciPy; I thought it was more bare bones (sorry about the naive question, but is this a recent thing in Yosemite or has it been always like this?)

> On Jun 1, 2016, at 2:39 PM, Matthew Brett <matthew.brett at gmail.com> wrote:
> 
> On Wed, Jun 1, 2016 at 11:17 AM, Sebastian Raschka
> <mail at sebastianraschka.com> wrote:
>>> I think you're using system Python on the Mac.   I'd really strongly
>>> recommend against that, because system Python
>> 
>> Yeah, but I think that the system Python doesn’t come with NumPy and SciPy installed on a Mac?
> 
> That's the entire problem - system Python has its own private copy of
> numpy and scipy and matplotlib that are not in the usual sys.path
> places:
> 
> $ /usr/bin/python -c 'import numpy; print(numpy.__file__)'
> /System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python/numpy/__init__.pyc
> 
> Then, if you try to upgrade them with pip, the new packages are below
> the private copies in directory precedence, and the effect is that the
> upgrade is ignored.
> 
> In effect, system Python is for the system, if you want to own your
> Python, you need to install another copy for yourself.
> 
> Cheers,
> 
> Matthew
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