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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_config_string(self):
 """ Build a configuration string that's compatible with the AlarmDecoder configuration command from the current values in the object. :returns: string """

        config_entries = []

        # HACK: This is ugly.. but I can't think of an elegant way of doing it.
        config_entries.append(('ADDRESS', '{0}'.format(self.address)))
        config_entries.append(('CONFIGBITS', '{0:x}'.format(self.configbits)))
        config_entries.append(('MASK', '{0:x}'.format(self.address_mask)))
        config_entries.append(('EXP',
                               ''.join(['Y' if z else 'N' for z in self.emulate_zone])))
        config_entries.append(('REL',
                               ''.join(['Y' if r else 'N' for r in self.emulate_relay])))
        config_entries.append(('LRR', 'Y' if self.emulate_lrr else 'N'))
        config_entries.append(('DEDUPLICATE', 'Y' if self.deduplicate else 'N'))
        config_entries.append(('MODE', list(PANEL_TYPES)[list(PANEL_TYPES.values()).index(self.mode)]))
        config_entries.append(('COM', 'Y' if self.emulate_com else 'N'))

        config_string = '&'.join(['='.join(t) for t in config_entries])

        return '&'.join(['='.join(t) for t in config_entries])