从服务器断开连接后如何重新连接套接字？

Question

我正在学习selectors模块，并且在断开与服务器的连接后不知道如何重新连接。

代码

import selectors
import socket
import time
import traceback

sel = selectors.DefaultSelector()

server_addr = ("localhost", 9978)

sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
sock.connect(server_addr)
sock.setblocking(False)

def handle(sock: socket.socket, mask):
    try:
        if mask & selectors.EVENT_WRITE:
            time.sleep(1)
            sock.send(b'hello')
            
        if mask & selectors.EVENT_READ:
            data = sock.recv(1024)
            print('recv', data)
    except socket.error:
        traceback.print_exc()
        # sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
        try:
            sock.connect(server_addr)
        except socket.error:
            traceback.print_exc()
    

sel.register(sock, selectors.EVENT_WRITE| selectors.EVENT_READ, handle)

while True:
    for key, mask in sel.select(): #type:selectors.SelectorKey
        callback = key.data
        callback(key.fileobj, mask)

如果创建新的套接字以重新连接，则必须在选择器中注册它。有什么办法可以正常处理吗？