socket编码问题

server.py

import socket
ip_port = ('127.0.0.1',9999)
sk = socket.socket()
sk.bind(ip_port)
sk.listen(5)

while True:
    # 服务端阻塞，等待客户端请求
	conn,addr = sk.accept()
	# 2.7 sendall(str)
	# 3.5 sendall(bytes)
	
	# 欢迎登陆 =》xe6xacxa2xe8xbfx8exe7x99xbbxe9x99x86
	# bytes('欢迎登陆', 'utf-8')
    conn.sendall(bytes('欢迎登陆', 'utf-8'))
	
    while True:
        client_data = conn.recv(1024)
        if not client_data:
            break
        reply = str(client_data, 'utf-8')
        conn.sendall(bytes(reply, 'utf-8'))

    conn.close()

client.py

import socket
ip_port = ('127.0.0.1', 9999)
sk = socket.socket()
sk.connect(ip_port)

while True:
    # recv返回值=字节类型
	server_reply_bytes = sk.recv(1024)
    #xe6xacxa2xe8xbfx8exe7x99xbbxe9x99x86
	# 字符串 = str(字节, 'utf-8')
	reply_str = str(server_reply_bytes, 'utf-8')
	# reply_str="欢迎登录"
	print(reply_str)
	
	# 字符串->字节   bytes(字符串，'utf-8')
	# 字节 -> 字符串 str(字节，'utf-8')
	
    inp = input("input:")
   
    sk.sendall(bytes(inp, 'utf-8'))

sk.close()