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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 """Number of neurons of the hidden layers. (2, 1) (3,) Traceback (most recent call last):
 hydpy.core.exceptiontools.AttributeNotReady: Attribute `nmb_neurons` \ of object `ann` has not been prepared so far. """

        return tuple(numpy.asarray(self._cann.nmb_neurons))