#!/usr/bin/env python#-*-coding:utf-8 -*-import socketsk=socket.socket()sk.connect(("127.0.0.1",8090))while 1:    inp=input(">>>")    sk.send(inp.encode("utf8"))    data=sk.recv(1024)    print(data.decode("utf8"))# import socket## sk=socket.socket()## sk.connect(("127.0.0.1",9904))

#!/usr/bin/env python#-*-coding:utf-8 -*-import selectorsimport socketsel = selectors.DefaultSelector()      # IO多路复用的方式有三种，这里根据操作系统拿一个def accept(sock, mask):    conn, addr = sock.accept()  # Should be ready    print('accepted', conn, 'from', addr)    conn.setblocking(False)    sel.register(conn, selectors.EVENT_READ, read)          # 将conn与read函数绑定，一旦conn被触发，与它有关系的就是readdef read(conn, mask):    try:        data = conn.recv(1000)  # Should be ready        if not data:            raise Exception        print('echoing', repr(data), 'to', conn)        conn.send(data)  # Hope it won't block    except Exception as e:        print('closing', conn)        sel.unregister(conn)        conn.close()sock = socket.socket()sock.bind(('localhost', 8090))sock.listen(100)sock.setblocking(False)          # 设置非阻塞sel.register(sock, selectors.EVENT_READ, accept)      # 将创建的sock对象进行注册，与accept函数绑定print("server.....")while True:    events = sel.select()     #[sock,..,conn2]    for key, mask in events:        callback = key.data           # callback就是之前绑定的函数名accept(conn变化前)        callback(key.fileobj, mask)   # key.fileobj就是服务器的sock对象（conn变化前）# import socket# import select# sk=socket.socket()# sk.bind(("127.0.0.1",9904))# sk.listen(5)# while True:#     r,w,e=select.select([sk,sk],[],[],5)#     r=[sk,]#     for i in r:#         conn,add=i.accept()#         print(conn)#         print("hello")##     print('>>>>>>')