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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 get_vbm(self):
 """ Returns data about the VBM. Returns: dict as {"band_index","kpoint_index","kpoint","energy"} - "band_index": A dict with spin keys pointing to a list of the indices of the band containing the VBM (please note that you can have several bands sharing the VBM) {Spin.up:[], Spin.down:[]} - "kpoint_index": The list of indices in self.kpoints for the kpoint vbm. Please note that there can be several kpoint_indices relating to the same kpoint (e.g., Gamma can occur at different spots in the band structure line plot) - "kpoint": The kpoint (as a kpoint object) - "energy": The energy of the VBM - "projections": The projections along sites and orbitals of the VBM if any projection data is available (else it is an empty dictionnary). The format is similar to the projections field in BandStructure: {spin:{'Orbital': [proj]}} where the array [proj] is ordered according to the sites in structure """

        if self.is_metal():
            return {"band_index": [], "kpoint_index": [],
                    "kpoint": [], "energy": None, "projections": {}}
        max_tmp = -float("inf")
        index = None
        kpointvbm = None
        for spin, v in self.bands.items():
            for i, j in zip(*np.where(v < self.efermi)):
                if v[i, j] > max_tmp:
                    max_tmp = float(v[i, j])
                    index = j
                    kpointvbm = self.kpoints[j]

        list_ind_kpts = []
        if kpointvbm.label is not None:
            for i in range(len(self.kpoints)):
                if self.kpoints[i].label == kpointvbm.label:
                    list_ind_kpts.append(i)
        else:
            list_ind_kpts.append(index)
        # get all other bands sharing the vbm
        list_ind_band = collections.defaultdict(list)
        for spin in self.bands:
            for i in range(self.nb_bands):
                if math.fabs(self.bands[spin][i][index] - max_tmp) < 0.001:
                    list_ind_band[spin].append(i)
        proj = {}
        for spin, v in self.projections.items():
            if len(list_ind_band[spin]) == 0:
                continue
            proj[spin] = v[list_ind_band[spin][0]][list_ind_kpts[0]]
        return {'band_index': list_ind_band,
                'kpoint_index': list_ind_kpts,
                'kpoint': kpointvbm, 'energy': max_tmp,
                'projections': proj}