1.server端

import socket
sk=socket.socket()
address=('127.0.0.1',8000)
sk.bind(address)
sk.listen(3)
conn,addr = sk.accept()
while 1:
data=conn.recv(1024)
print(str(data,'utf8'))
if not data:
conn.close()
conn,addr=sk.accept()
print(addr)
continue
if not data:break
inp=input('>>>')
conn.send(bytes(inp,'utf8'))

2.client端

import socket
sk=socket.socket()
address=('127.0.0.1',8000)
sk.connect(address)
while True:
inp=input('>>>')
if inp=='exit':
break
sk.send(bytes(inp,'utf8'))
data = sk.recv(1024)
print(str(data, 'utf8'))
sk.close()