Telnet library that verifies the remote port open

utelnet.py

class Connect:
    def __init__(self, ip, port):
        self.ip = ip
        self.port = port

    def verify(self):
        import socket
        import telnetlib
        session = None
        try:
            #telnet.Telnet(ip, port, timeout in sec)
            session = telnetlib.Telnet(self.ip, self.port, 3)
        except socket.error as err:
            #print err.message
            return False
        else:
            return True
        finally:
            if session is not None:
                session.close()


if __name__ == "__main__":
    # file ip_ports have all the ips and ports seperated with spaces
    # Eg: 
    #172.16.0.103 80
    #172.16.0.104 80
    f = open('ip_ports', 'r')
    for line in f.readlines():
        line.strip()
        #print line
        (ip, port) = line.split()
        port = int(port)
        connection = Connect(ip, port)
        if not connection.verify():
            print ("%s:%d  closed" % (ip, port))
        else:
            print ("%s:%d  open" % (ip, port))
    f.close()