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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 do_diff(self, params):
 """ \x1b[1mNAME\x1b[0m diff - Display the differences between two paths \x1b[1mSYNOPSIS\x1b[0m diff <src> <dst> \x1b[1mDESCRIPTION\x1b[0m The output is interpreted as: -- means the znode is missing in /new-configs ++ means the znode is new in /new-configs +- means the znode's content differ between /configs and /new-configs \x1b[1mEXAMPLES\x1b[0m > diff /configs /new-configs -- service-x/hosts ++ service-x/hosts.json +- service-x/params """

        count = 0
        for count, (diff, path) in enumerate(self._zk.diff(params.path_a, params.path_b), 1):
            if diff == -1:
                self.show_output("-- %s", path)
            elif diff == 0:
                self.show_output("-+ %s", path)
            elif diff == 1:
                self.show_output("++ %s", path)

        if count == 0:
            self.show_output("Branches are equal.")