test_builtin.py 文件源码

def test_reversed():
    reversed = py.builtin.reversed
    r = reversed("hello")
    assert iter(r) is r
    s = "".join(list(r))
    assert s == "olleh"
    assert list(reversed(list(reversed("hello")))) == ['h','e','l','l','o']
    py.test.raises(TypeError, reversed, reversed("hello"))