cython

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# mode: run
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def slice1(stop):
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    """
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    >>> list(range(8))
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    [0, 1, 2, 3, 4, 5, 6, 7]
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    >>> list(range(10))[slice1(8)]
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    [0, 1, 2, 3, 4, 5, 6, 7]
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    >>> slice1(1)
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    slice(None, 1, None)
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    >>> slice1(10)
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    slice(None, 10, None)
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    >>> slice1(None)
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    slice(None, None, None)
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    >>> slice1(1) == slice(1)
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    True
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    >>> slice1(None) == slice(None)
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    True
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    """
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    return slice(stop)
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def slice1_const():
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    """
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    >>> slice1_const() == slice(12)
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    True
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    """
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    return slice(12)
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def slice2(start, stop):
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    """
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    >>> list(range(2, 8))
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    [2, 3, 4, 5, 6, 7]
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    >>> list(range(10))[slice2(2, 8)]
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    [2, 3, 4, 5, 6, 7]
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    >>> slice2(1, 10)
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    slice(1, 10, None)
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    >>> slice2(None, 10)
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    slice(None, 10, None)
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    >>> slice2(4, None)
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    slice(4, None, None)
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    """
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    return slice(start, stop)
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def slice2_const():
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    """
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    >>> slice2_const() == slice(None, 12)
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    True
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    """
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    return slice(None, 12)
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def slice3(start, stop, step):
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    """
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    >>> list(range(2, 8, 3))
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    [2, 5]
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    >>> list(range(10))[slice3(2, 8, 3)]
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    [2, 5]
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    >>> slice3(2, None, 3)
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    slice(2, None, 3)
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    >>> slice3(None, 3, 2)
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    slice(None, 3, 2)
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    """
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    return slice(start, stop, step)
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def slice3_const():
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    """
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    >>> slice3_const() == slice(12, None, 34)
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    True
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    """
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    return slice(12, None, 34)
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