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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 init(self):
 """Initialize histograms."""


        evclass_shape = [16, 40, 10]
        evtype_shape = [16, 16, 40, 10]
        evclass_psf_shape = [16, 40, 10, 100]
        evtype_psf_shape = [16, 16, 40, 10, 100]

        self._hists_eff = dict()
        self._hists = dict(evclass_on=np.zeros(evclass_shape),
                           evclass_off=np.zeros(evclass_shape),
                           evclass_alpha=np.zeros([16, 40, 1]),
                           evtype_on=np.zeros(evtype_shape),
                           evtype_off=np.zeros(evtype_shape),
                           evtype_alpha=np.zeros([16, 1, 40, 1]),
                           evclass_psf_on=np.zeros(evclass_psf_shape),
                           evclass_psf_off=np.zeros(evclass_psf_shape),
                           evtype_psf_on=np.zeros(evtype_psf_shape),
                           evtype_psf_off=np.zeros(evtype_psf_shape),
                           )