[Numpy-discussion] in(np.nan) on python 2.6

[Pierre GM]

All,
Sorry to bump my own post, and I was kinda threadjacking anyway:

Some functions of numy.ma (eg, ma.max, ma.min...) accept explicit  
outputs that may not be MaskedArrays.
When such an explicit output is not a MaskedArray, a value that should  
have been masked is transformed into np.nan.

That worked great in 2.5, with np.nan automatically transformed to 0  
when the explicit output had a int dtype. With Python 2.6, a  
ValueError is raised instead, as np.nan can no longer be casted to int.

What should be the recommended behavior in this case ? Raise a  
ValueError or some other exception, to follow the new Python2.6  
convention, or silently replace np.nan by some value acceptable by int  
dtype (0, or something else) ?

Thanks for any suggestion,
P.