human
Complete the below
def _test_initializer(mu=0.0, sigma=1.0, dtype=tf.float32):

    ''''Custom initializer for Linear tests.'
    '''

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Give me a the Python code you requested?
assistant
#Here is the Python code you requested.
    def _initializer(shape, dtype=init_ops._assert_float_dtype(dtype), partition_info=None):
        random_normal_tensor = ((np.asarray(np.random.randn(*shape)) * sigma) + mu)
        return random_normal_tensor.astype(dtype.as_numpy_dtype())
    return _initializer