Cannot use numpy arrays, IOC crashes

[exzombie]

I was trying to evaluate whether passing arrays as strings (as done by PyDevice) incurs too much overhead for our use case, but I didn't get very far. Calling the following function through a waveform record results in a crash.

def test_func(values):
    print(numpy.array(values))

Result:

numpy/core/src/multiarray/alloc.c:91: _npy_alloc_cache: Assertion `PyGILState_Check()' failed.