python selectors模块应用

################################# server端###########################################

# selectors模块应用
# import selectors
# import socket
# 
# sel = selectors.DefaultSelector()
# 
# 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)
# 
# def 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)
# 
# sel.register(sock, selectors.EVENT_READ, accept)
# print("server.....")
# 
# while True:
#     events = sel.select()#[sock,,conn2]
#     for key, mask in events:
#         callback = key.data
#         callback(key.fileobj, mask)
# 
# 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,],[],[],5)
#     for i in r:
#         conn,add=i.accept()
#         print(conn)
#         print("hello")
# 
#     print('>>>>>>')

################################# Client端###########################################

import socket
# 
# sk=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"))