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- from toolz.compatibility import map, filter, iteritems, iterkeys, itervalues
- def test_map_filter_are_lazy():
- def bad(x):
- raise Exception()
- map(bad, [1, 2, 3])
- filter(bad, [1, 2, 3])
- def test_dict_iteration():
- d = {'a': 1, 'b': 2, 'c': 3}
- assert not isinstance(iteritems(d), list)
- assert not isinstance(iterkeys(d), list)
- assert not isinstance(itervalues(d), list)
- assert set(iteritems(d)) == set(d.items())
- assert set(iterkeys(d)) == set(d.keys())
- assert set(itervalues(d)) == set(d.values())
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