ctypedef fused sequence:

    list

    tuple

    object

def unpack_one(sequence it):

    """

    >>> items = [1]

    >>> unpack_one(items)

    1

    >>> unpack_one(iter(items))

    1

    >>> unpack_one(list(items))

    1

    >>> unpack_one(tuple(items))

    1

    """

    a, = it

    return a

def unpack_two(sequence it):

    """

    >>> items = [1,2]

    >>> unpack_two(items)

    (1, 2)

    >>> unpack_two(iter(items))

    (1, 2)

    >>> unpack_two(list(items))

    (1, 2)

    >>> unpack_two(tuple(items))

    (1, 2)

    """

    a,b = it

    return a,b

def unpack_two_int(sequence it):

    """

    >>> items = [1,2]

    >>> unpack_two_int(items)

    (1, 2)

    >>> unpack_two_int(iter(items))

    (1, 2)

    >>> unpack_two_int(list(items))

    (1, 2)

    >>> unpack_two_int(tuple(items))

    (1, 2)

    >>> items = [1, object()]

    >>> unpack_two_int(items)  # doctest: +ELLIPSIS

    Traceback (most recent call last):

    TypeError: ...int...

    >>> unpack_two_int(iter(items))  # doctest: +ELLIPSIS

    Traceback (most recent call last):

    TypeError: ...int...

    >>> unpack_two_int(list(items))  # doctest: +ELLIPSIS

    Traceback (most recent call last):

    TypeError: ...int...

    >>> unpack_two_int(tuple(items))  # doctest: +ELLIPSIS

    Traceback (most recent call last):

    TypeError: ...int...

    """

    cdef int b

    a,b = it

    return a,b

def unpack_many(sequence it):

    """

    >>> items = range(1,13)

    >>> unpack_many(items)

    (1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)

    >>> unpack_many(iter(items))

    (1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)

    >>> unpack_many(list(items))

    (1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)

    >>> unpack_many(tuple(items))

    (1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)

    """

    a,b,c,d,e,f,g,h,i,j,k,l = it

    return a,b,c,d,e,f,g,h,i,j,k,l

def unpack_many_int(sequence it):

    """

    >>> items = range(1,13)

    >>> unpack_many_int(items)

    (1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)

    >>> unpack_many_int(iter(items))

    (1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)

    >>> unpack_many_int(list(items))

    (1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)

    >>> unpack_many_int(tuple(items))

    (1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)

    >>> items = range(1,10)

    >>> unpack_many_int(items)

    Traceback (most recent call last):

    ValueError: need more than 9 values to unpack

    >>> unpack_many_int(iter(items))

    Traceback (most recent call last):

    ValueError: need more than 9 values to unpack

    >>> unpack_many_int(list(items))

    Traceback (most recent call last):

    ValueError: need more than 9 values to unpack

    >>> unpack_many_int(tuple(items))

    Traceback (most recent call last):

    ValueError: need more than 9 values to unpack

    """

    cdef int b

    cdef long f

    cdef Py_ssize_t h

    a,b,c,d,e,f,g,h,i,j,k,l = it

    return a,b,c,d,e,f,g,h,i,j,k,l