如何将套接字引用为稍后可以使用的类变量？

import socket

class MyClass:
    def __init__(self):
        self.sock = None

class MyClass:
    def __init__(self):
        self.sock = None

    def create_socket(self):
        self.sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)

class MyClass:
    def __init__(self):
        self.sock = None

    def create_socket(self):
        self.sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)

    def connect(self, host, port):
        self.sock.connect((host, port))

    def send_data(self, data):
        self.sock.send(data)

    def receive_data(self, buffer_size):
        return self.sock.recv(buffer_size)