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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:
 async def get_real_ext_ip(self):
 """Return real external IP address."""

        while self._ip_hosts:
            try:
                timeout = aiohttp.ClientTimeout(total=self._timeout)
                async with aiohttp.ClientSession(
                    timeout=timeout, loop=self._loop
                ) as session, session.get(self._pop_random_ip_host()) as resp:
                    ip = await resp.text()
            except asyncio.TimeoutError:
                pass
            else:
                ip = ip.strip()
                if self.host_is_ip(ip):
                    log.debug('Real external IP: %s', ip)
                    break
        else:
            raise RuntimeError('Could not get the external IP')
        return ip