John Hunter wrote:
> On Mon, Aug 3, 2009 at 2:15 PM, John Hunter<jdh2...@gmail.com> wrote:
>
>> This may have been Eric's change to clean up the pylab imports -- all
>> the mlab imports come before the pylab imports. Was this intentional?
>> My guess is not, since np.loadtxt is the replacement for pylab.load.
>> I prefer to do what we are currently doing, which is issue the
>> deprecation warning, but I wanted to at least find out if this change
>> was intentional (I noticed it because it broke
>> docs/pyplot/plotmap.py), which tries to load some basemap data:
>
> Correction, I had confused myself for a minute thinking numpy.load was
> the old numpy.load which handled plain text files, ie what became
> loadtxt. np.load and np.save are too important as regular numpy
> functions, so I think now would be a good time to remove the mlab
> versions from the pylab namespace. The question is : how best to do
> it? Unfortunately, a lot of people are still using the old load/save
> and the deprecation warnings are only in 0.99 but not 0.98 so we have
> not done the typical deprecation cycle.
>
> We could create a special purpose deprecation function in pylab which
> raises a deprecation error: 'use np.loadtxt for plain text, np.load
> for binary numpy arrays, or mlab.load for old pylab.load
> compatability'). Ie, not have a functional load/save in the pylab
> namespace at all.
That is still making an abrupt break in functionality. It could be made
more gentle by having the pylab wrapper do something like:
try:
return np.load(*args, **kwargs)
except: # deliberately violate the rule against catching everything
warnings.warn("deprecation etc.")
return mlab.load(*args, **kwargs)
In the next release the warning could be changed to an error, and in the
release after that pylab.load could simply be numpy.load
Eric
>
> JDH
>
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