cython

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__doc__ = u"""
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>>> import sys
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>>> print(sys.exc_info()[0]) # 0
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None
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>>> exc = test_c()
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>>> isinstance(exc, TestException) or exc
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True
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>>> print(sys.exc_info()[0]) # test_c()
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None
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"""
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import sys
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class TestException(Exception):
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    pass
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def test_c():
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    try:
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        raise TestException
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    except TestException, e:
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        return e
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