On 7/7/07, Timothy Hochberg <[EMAIL PROTECTED]> wrote:
On 7/7/07, Travis Oliphant <[EMAIL PROTECTED]> wrote: > > > > > > > > On 7/6/07, *Travis Oliphant* <[EMAIL PROTECTED] > > <mailto:[EMAIL PROTECTED]>> wrote: > >
<snip> Here is a link to PEP 285 <http://www.python.org/dev/peps/pep-0285/> where Guido discusses his reasoning about the bool type. I note that boolean arrays behave as integers under addition of a scalar, but not under addition of boolean arrays, where '+' seems to mean 'or'. The latter looks inconsistent with the Python convention. In [60]: a Out[60]: array([ True, True, True, True], dtype=bool) In [61]: a + a Out[61]: array([ True, True, True, True], dtype=bool) In [62]: a + 1 Out[62]: array([2, 2, 2, 2]) In [66]: True + True Out[66]: 2 Now might be a good time to discuss and document these choices. Chuck
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