def _parse_hosts(self):
        etc_path = '/etc/hosts'
        if 'WINDIR' in os.environ:
            etc_path = os.environ['WINDIR'] + '/system32/drivers/etc/hosts'
        try:
            with open(etc_path, 'rb') as f:
                for line in f.readlines():
                    line = line.strip()
                    parts = line.split()
                    if len(parts) >= 2:
                        ip = parts[0]
                        if common.is_ip(ip):
                            for i in range(1, len(parts)):
                                hostname = parts[i]
                                if hostname:
                                    self._hosts[hostname] = ip
        except __HOLE__:
            self._hosts['localhost'] = '127.0.0.1'
dataset/ETHPy150Open ziggear/shadowsocks/shadowsocks/asyncdns.py/DNSResolver._parse_hosts