def ValidateAgenciesHaveSameAgencyTimezone(self, problems):
    timezones_set = set(map(lambda agency:agency.agency_timezone,
                            self.GetAgencyList()))
    if len(timezones_set) > 1:
      timezones_str = ('", "'.join(timezones_set)) % '"%s"'
      problems.InvalidValue('agency_timezone', timezones_str,
                            'All agencies should have the same time zone. ' \
                            'Please review agency.txt.')
dataset/ETHPy150Open google/transitfeed/transitfeed/schedule.py/Schedule.ValidateAgenciesHaveSameAgencyTimezone/swapped operands of `%`