def testWithPredicate(self):
isstr = lambda s: isinstance(s, str)
self.assertTrue(it.all(['', 'a', 'abC'], isstr))
self.assertFalse(it.any([False, None, True, 0, 0.0], isstr))
def testNoPredicate(self):
self.assertTrue(it.all([1, True, -1, 'a']))
self.assertFalse(it.all([1, 'a', None]))
