P2P Simple Node

import socket
import sys

class Node:
    ip = ""
    port = "*"

    def __init__(self, address):
        self.ip = str(address[0])
        self.port = int(address[1])

    def __init__(self, ip, port):
        self.ip = str(ip)
        self.port = int(port)

class P2P:
    node = None
    connectedNodes = []

    def __checkForConnection(self):
        try:
            data, nodeAddress = self.sock.recvfrom(1024)

            if not node in connectedNodes:
                print "Connection-request from " + nodeAddress[0] + ":" + nodeAddress[1] + ". Accept? (y/n)"

                choice = raw_input()

                if choice == "y":
                    connectedNodes.append(Node(nodeAddress))

                    self.sock.sendto("Connection-request accepted.", node.address)

                    print "\t" + nodeAddress[0] + ":" + nodeAddress[1] + " has connected to us."
                else:
                    self.sock.sendto("Connection-request denied.", nodeAddress)
        except:
            pass

    def __connect(self, node):
        print "\tTrying to connect to " + node.ip + ":" + str(node.port) + "..."

        self.sock.sendto(b"Hello.", (node.ip, node.port))

        waiting = True

        while waiting:
            data = self.sock.recvfrom(1024)

            if not data == None:
                print "\t'" + data + "'"

                if data == "Connection-request accepted.":
                    connectedNodes.append(node)

                waiting = False

        return

    def __ask(self):
        print "(" + self.node.ip + "): "
        raw_data = raw_input()
        data = raw_data.split(' ')

        return data

    def __init__(self):
        ip = socket.gethostbyname(socket.gethostname())

        print "Hello " + ip + ". What port would you like to listen to today?"

        portEnteredCorrectly = False

        while not portEnteredCorrectly:
            port = int(input());

            if not port == None:
                self.node = Node(ip, port)

                portEnteredCorrectly = True
            else:
                print "Port entered incorrectly. Try again."


        self.sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
        self.sock.bind((self.node.ip, self.node.port))
        self.sock.setblocking(0)

        print "Listening on port " + str(self.node.port) + "..."

        while True:
            self.__checkForConnection()

            inputtedValues = self.__ask()

            amValues = len(inputtedValues)

            if amValues == 1:
                if inputtedValues[0] == "exit":
                    sys.exit(0)
            elif amValues == 3:
                if inputtedValues[0] == "connect":
                    self.__connect(Node(inputtedValues[1], inputtedValues[2]))
                else:
                    print "\tInput not recognised."
            else:
                print "\tInput not recognised."

        self.sock.close()
if __name__ == "__main__":
    P2P()