[Numpy-discussion] Deprecate boolean math operators?

Alexander Belopolsky ndarray at mac.com
Thu Dec 5 23:14:52 EST 2013

On Thu, Dec 5, 2013 at 11:05 PM, Alan G Isaac <alan.isaac at gmail.com> wrote:

> For + and * (and thus `dot`), this will "fix" something that is not broken.

+ and * are not broken - just redundant given | and &.

What is really broken is -, both unary and binary:

>>> int(np.bool_(0) - np.bool_(1))
>>> int(-np.bool_(0))

> I'm sure I cannot be the only one who has for years taught students
> about Boolean matrices using NumPy

(I would not be so sure:-)

In that experience, did you find minus to be as useful?
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