[SciPy-dev] Suppressing of numpy __mul__, __div__ etc
Dmitrey
tmp50@ukr....
Thu Dec 17 09:37:21 CST 2009
От кого: Sebastian Walter <sebastian.walter@gmail.com>
could you elaborate on why someone would
want to do an `array * polynomial` operation and not expect it to
be an array of polynomial as result?
this has been already mentioned in the thread
http://permalink.gmane.org/gmane.comp.python.scientific.devel/12445
In [1]: from numpy.polynomial import Polynomial as poly
In [2]: p = poly([0,1])
In [3]: ones(2) * p
Out[3]: array([poly([ 0. 1.], [-1. 1.]), poly([ 0. 1.], [-1. 1.])], dtype=object)
In [4]: p * ones(2)
Out[4]: Polynomial([ 0., 1., 1.], [-1., 1.])
you would simply add
class oofun:
iscontainer = True
to your oofun implementation and you would get exactly what you want....I guess "iscontainer" is a bad choice for the field, but if numpy developers decide to use this one, let it be, it doesn't matter for me sufficiently.
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