如何在多个文件之间共享socket实例？

# socket_manager.py
import socket

class SocketManager:
    __instance = None

    @staticmethod
    def get_instance():
        if SocketManager.__instance is None:
            SocketManager()
        return SocketManager.__instance

    def __init__(self):
        if SocketManager.__instance is not None:
            raise Exception("This class is a singleton!")
        else:
            SocketManager.__instance = self
            self.socket_instance = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
            # 进行socket实例的初始化配置

    def get_socket_instance(self):
        return self.socket_instance

# file1.py
from socket_manager import SocketManager

socket_manager = SocketManager.get_instance()
socket_instance = socket_manager.get_socket_instance()

# 使用socket_instance进行操作，如发送和接收数据

# file2.py
from socket_manager import SocketManager

socket_manager = SocketManager.get_instance()
socket_instance = socket_manager.get_socket_instance()

# 使用socket_instance进行操作，如发送和接收数据