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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:
 def energy(self, sample_like, dtype=np.float):
 """The energy of the given sample. Args: sample_like (samples_like):
 A raw sample. `sample_like` is an extension of NumPy's array_like structure. See :func:`.as_samples`. dtype (:class:`numpy.dtype`, optional):
 The data type of the returned energies. Defaults to float. Returns: The energy. """

        energy, = self.energies(sample_like, dtype=dtype)
        return energy