Nevermind - I found the answer. I was trying this in ipython with pylab: http://stackoverflow.com/questions/7491951/python-builtin-all-with-generators
Neal Becker wrote: > from itertools import ifilter > > if all (hasattr (b, 'test') for b in ifilter (lambda b: b < 10, > [1,2,3,4])): > print 'True' > > same result using filter instead of ifilter. > > hasattr (b, 'test') where b is 1, 2, 3... should all be False. So why > does this print True? > -- Those who fail to understand recursion are doomed to repeat it -- https://mail.python.org/mailman/listinfo/python-list