634         class BadSeq(object):  class
639         self.assertRaises(ValueError, list, filter(lambda x: x, BadSeq()))
769         class BadSeq:  class
772         self.assertRaises(ValueError, len, BadSeq())
847         class BadSeq:  class
851         self.assertRaises(ValueError, list, map(lambda x: x, BadSeq()))
875         class BadSeq:  class
878         self.assertRaises(ValueError, max, BadSeq())
927         class BadSeq:  class
930         self.assertRaises(ValueError, min, BadSeq())
1307         class BadSeq:  class
1310         self.assertRaises(ValueError, sum, BadSeq())
1383         class BadSeq:  class
1389         self.assertRaises(ValueError, list, zip(BadSeq(), BadSeq()))