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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_ticks(self):
 """ Get all ticks and labels for a band structure plot. Returns: A dict with 'distance': a list of distance at which ticks should be set and 'label': a list of label for each of those ticks. """

        tick_distance = []
        tick_labels = []
        previous_label = self._bs.qpoints[0].label
        previous_branch = self._bs.branches[0]['name']
        for i, c in enumerate(self._bs.qpoints):
            if c.label is not None:
                tick_distance.append(self._bs.distance[i])
                this_branch = None
                for b in self._bs.branches:
                    if b['start_index'] <= i <= b['end_index']:
                        this_branch = b['name']
                        break
                if c.label != previous_label \
                        and previous_branch != this_branch:
                    label1 = c.label
                    if label1.startswith("\\") or label1.find("_") != -1:
                        label1 = "$" + label1 + "$"
                    label0 = previous_label
                    if label0.startswith("\\") or label0.find("_") != -1:
                        label0 = "$" + label0 + "$"
                    tick_labels.pop()
                    tick_distance.pop()
                    tick_labels.append(label0 + "$\\mid$" + label1)
                else:
                    if c.label.startswith("\\") or c.label.find("_") != -1:
                        tick_labels.append("$" + c.label + "$")
                    else:
                        tick_labels.append(c.label)
                previous_label = c.label
                previous_branch = this_branch
        return {'distance': tick_distance, 'label': tick_labels}