8 examples of 'create empty numpy array' in Python

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def create_array():
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    """Creates a simple 3D numpy array with unique values at each
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    location in the matrix.
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    """
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    rows, cols, depth = 2, 3, 4
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    arr = numpy.zeros((rows, cols, depth), 'i')
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    count = 0
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    for i in range(rows):
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        for j in range(cols):
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            for k in range(depth):
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                arr[i,j,k] = count
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                count += 1
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    return arr

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def create_empty_arrays():
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	oneD_empty = np.empty(5)
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	twoD_empty = np.empty((5,4))
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	threeD_empty = np.empty((5,4,3))
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	print('1D array')
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	print(oneD_empty)
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	print('2D array')
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	print(twoD_empty)
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	print('3D array')
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	print(threeD_empty)

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def create_from_numpy(self, arr):
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    return gpuarray.to_gpu(arr.astype(self.dtype))

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def array(shape, dtype):
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    return numpy.random.uniform(-1, 1, shape).astype(dtype)

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def test_construct(self):
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	a = bf.ndarray(self.known_vals, dtype='f32')
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	np.testing.assert_equal(a, self.known_array)

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def create_empty_channels(width, height, num_channels):
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    return np.array(num_channels*[height*[np.zeros(width)]])

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def zeros(shape, dtype=float):
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    """
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    Array of zeros.
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    Return an array of given shape and type, filled with zeros.
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    Parameters
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    ----------
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    shape : {sequence of ints, int}
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        Shape of the array
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    dtype : data-type, optional
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        The desired data-type for the array, default is np.float64.
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    Returns
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    -------
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    out : bharray
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        Array of zeros of given shape, dtype, and order.
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    """
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    ret = empty(shape, dtype)
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    ret.fill(0)
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    return ret

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def ones(shape, dtype=float):
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    dtype = _dtype_dct[dtype]
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    return _array_factory(shape, dtype(1), dtype)