[Numpy-discussion] sum and prod

Hi, I ran the following code: args = np.array([4,8]) print np.sum( (arg > 0) for arg in args) print np.sum([(arg > 0) for arg in args]) print np.prod( (arg > 0) for arg in args) print np.prod([(arg > 0) for arg in args]) with this result: 2 1 1 Is the difference between prod and sum intentional? I would expect that numpy.prod would also work on a generator, just like numpy.sum. BTW: the last line does what I need: the product over the truth values of all elements of args. Is there perhaps a nicer (conciser) way to achieve this? Thanks. Nicky