[Cython] Problems accessing ndarray attributes

[Ilmar Wilbers]

Hi list,

While trying to wrap an external C library, I have stumbled upon some 
question. A lot of them were answered by going through the mailing list 
archive, however a few remain.

I have the following function with arguments:
def tridag(np.ndarray[DTYPE_t, ndim=1, negative_indices=False] a)

I want to do some assertions on the array a:
    assert a.dtype == np.float32
    assert a.flags['C_CONTIGUOUS']
but keep getting an error  "Attempting to index non-array type 'int'". 
Checking the type of a.flags indicates that it is in int. What am I missing?

ilmar