Python Numpy NDPointer:Don'；我不知道如何转换参数1

我试图把一个麻木数组推到C++代码中。 < C++函数是，

extern "C"
void propagate(float * __restrict__ H, const float * __restrict__ W,
               const float * __restrict__ U, const float * __restrict__ x,
               float a, int h_len, int samples);

我的python代码是

from numpy import *
from numpy.ctypeslib import ndpointer
import ctypes

lib = ctypes.cdll.LoadLibrary("libesn.so")

propagate = lib.propagate
propagate.restype = None
propagate.argtype = [ndpointer(ctypes.c_float, flags="C_CONTIGUOUS"),
                     ndpointer(ctypes.c_float, flags="C_CONTIGUOUS"),
                     ndpointer(ctypes.c_float, flags="C_CONTIGUOUS"),
                     ndpointer(ctypes.c_float, flags="C_CONTIGUOUS"),
                     ctypes.c_float, ctypes.c_int, ctypes.c_int]

H = W = U = X = zeros((10, 10))
a = 5.0
propagate(H, W, U, X, a, U.shape[0], X.shape[0])

我犯了一个错误

Traceback (most recent call last):
  File "./minimal.py", line 23, in <module>
    propagate(H, W, U, X, a, U.shape[0], X.shape[0])
ctypes.ArgumentError: argument 1: <type 'exceptions.TypeError'>: Don't know how to convert parameter 1

回溯（最近一次呼叫最后一次）：
文件“/minimal.py”，第23行，在
传播（H，W，U，X，a，U.shape[0]，X.shape[0]）
ctypes.ArgumentError:参数1:：不知道如何转换参数1

---

如何修复此问题？

愚蠢的打字错误。。。应该是

propagate.argtypes

。这修复了导致StackOverflow上已有答案的其他错误的神秘错误

propagate = lib.propagate
propagate.restype = None
propagate.argtypes = [ndpointer(ctypes.c_float, flags="C_CONTIGUOUS"),
                      ndpointer(ctypes.c_float, flags="C_CONTIGUOUS"),
                      ndpointer(ctypes.c_float, flags="C_CONTIGUOUS"),
                      ndpointer(ctypes.c_float, flags="C_CONTIGUOUS"),
                      ctypes.c_float, ctypes.c_int, ctypes.c_int]