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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 relogin(self):
 """Perform a re-login"""

        try:
            self.__auth = None  # reset auth before relogin
            self.login()
        except ZabbixAPIException as e:
            self.log(ERROR, 'Zabbix API relogin error (%s)', e)
            self.__auth = None  # logged_in() will always return False
            raise