Method func

numpy/core/tests/test_numeric.py:1617–1618

(arr)

        # The array should be large enough to likely run into threading issues
        arr = np.random.uniform(size=(5000, 4)).view(dt)[:, 0]
        def func(arr):
            arr.nonzero()

        tpe = ThreadPoolExecutor(max_workers=8)
        futures = [tpe.submit(func, arr) for _ in range(10)]