从列表转换为cython函数的数组出错

Question

在python中：

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在Cython中：

def quicksort(arr):
    if len(arr) <= 1:
        return arr
    pivot = arr[len(arr) // 2]
    left = [x for x in arr if x < pivot]
    middle = [x for x in arr if x == pivot]
    right = [x for x in arr if x > pivot]
    return quicksort(left) + middle + quicksort(right)

设置文件：

cimport cython
cpdef int[:] quicksort(int[:] arr):
    cdef int pivot
    cdef int[:] left
    cdef int[:] middle
    cdef int[:] right
    if len(arr) <= 1:
        return arr
    pivot = arr[len(arr) // 2]
    left = [x for x in arr if x < pivot]
    middle = [x for x in arr if x == pivot]
    right = [x for x in arr if x > pivot]
    return quicksort(*left) + middle + quicksort(*right)

在main.py文件中：

from distutils.core import setup
from distutils.extension import Extension
from Cython.Build import cythonize
import numpy

extensions = [
    Extension("numpy_cy", ["numpy_cy.pyx"],
              include_dirs = [numpy.get_include()],
              )
]

setup(
    name = "numpy_cy",
    ext_modules = cythonize(extensions)
    )

我在控制台中的错误：

arr = list(np.random.randint(1000) for _ in range(100000))
arr = np.array(arr, dtype=np.int32)

numpy_cy.quicksort(arr)

有人可以帮助我还是给我建议？