PYTHON setup.py build_ext --inplace
PYTHON -c "import ttt"

######## setup.py ########

from Cython.Build.Dependencies import cythonize
from distutils.core import setup

setup(
  ext_modules = cythonize("*.pyx"),
)


######## tt.pxd ########

from cpython.array cimport array

cdef class Foo:
    cdef array obj

######## tt.pyx ########

cdef class Foo:
    def __init__(self, data):
        self.obj = data

######## ttt.pyx ########

from array import array
from cpython.array cimport array
from tt cimport Foo

cdef array a = array('i', [1,2,3])
cdef Foo x
print(a.data.as_ints[0])
x = Foo(a)
print(x.obj.data.as_ints[0])