Product of an empty sequence

Ivan Vilata i Balaguer ivilata at carabos.com
Thu Oct 19 06:59:08 CDT 2006


Today I was surprised by this::

>>> import numpy
>>> numpy.__version__
'1.0.dev3341'
>>> numpy.prod(())
1.0

Wouldn't be 0.0 a more natural answer?  I understand that 1 is neutral
on product operations, but I still can't see why 1.0 is a better answer.
 Sorry for the clueless question, but I have searched lists, docstrings
and web and found nothing about this.

(BTW, the definitions of ``prod()`` and ``product()`` are still
identical as noted by Sebastian Haase some time ago.)

::

	Ivan Vilata i Balaguer   >qo<   http://www.carabos.com/
	       Cárabos Coop. V.  V  V   Enjoy Data
	                          ""

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