cython

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import sys
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def reraise(f, exc):
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    """
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    >>> def f(exc): raise exc
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    >>> reraise(f, TypeError)
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    Traceback (most recent call last):
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    TypeError
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    >>> def f(exc): raise exc('hiho')
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    >>> reraise(f, TypeError)
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    Traceback (most recent call last):
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    TypeError: hiho
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    """
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    try:
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        f(exc)
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    except:
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        assert sys.exc_info()[0] is exc, str(sys.exc_info()[1])
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        raise
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def reraise_original(f, exc, raise_catch):
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    """
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    >>> def f(exc): raise exc
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    >>> def raise_catch_py():
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    ...     try: raise ValueError
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    ...     except: pass
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    >>> reraise_original(f, TypeError, raise_catch_py)
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    Traceback (most recent call last):
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    TypeError
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    >>> reraise_original(f, TypeError, raise_catch_cy)
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    Traceback (most recent call last):
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    TypeError
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    >>> reraise_original(f, TypeError, raise_catch_cy_non_empty)
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    Traceback (most recent call last):
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    TypeError
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    """
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    try:
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        f(exc)
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    except:
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        raise_catch()
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        assert sys.exc_info()[0] is exc, str(sys.exc_info()[1])
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        raise
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def raise_catch_cy():
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    try: raise ValueError
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    except: pass
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def raise_catch_cy_non_empty():
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    try: raise ValueError
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    except:
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        a = 1+1
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