[Python-*-Reading] basic Python tutorial-virtual Tea Party

In general, a server client that only supports one chat room uses Telnet

Books: Python Data Summary

Python tutorial here is the source code in Chapter 24th. It is used for practice research.

# Coding: utf8 # python2.7 chatser2.py # a slightly more complex chatting room server ''' after using python to start the service telnet connection, it can become a Simple Chat Server first login: Login Name logout: logout speak: Say to check who has logged on to the server: WHO to view the person in the same room: look simple example: Telnet localhost 50005 welcome to testchatlogin tianshidiyu has entered the room. nihunknown command: ihsay nihaotianshi: nihaodiyu: niyehao ''' from asyncore import dispatcher from asynchat import async_chatimport socketimport asyncorehost = 'po RT = 50005 serverconf = (host, Port) name = 'testchat' class endsession (exception): pass class commandhandler (object ): '''command parsing class ''' def unknown (self, session, CMD): 'responds to unknown command 'session. push ('unknown command: % s \ r \ n' % cmd) def handle (self, session, line ): 'COMMAND for parsing information sent from the client and content 'if not line: Print 'Please write a command... 'If not line. strip (): Print 'get a line: ', line return parts = line. split ('', 1) # command separation Cmd = parts [0] Try: line = parts [1]. strip () handle T indexerror: line = ''# Call the corresponding Method Processing Command meth = getattr (self, 'Do _ '+ cmd, none) try: # Call the meth (Session, line) method t typeerror: Self. unknown (Session, CMD) class room (commandhandler): ''' includes a generic environment for one or more users (sessions. Processes basic commands and broadcasts ''' def _ init _ (self, server): Self. server = server self. sessions = [] def add (self, session): 'Add a user' self. sessions. append (Session) def remove (self, session): 'A user leave 'self. sessions. remove (Session) def broadcast (self, line): 'Give all session in the room a line' for session in self. sessions: Session. push (line) def do_logout (self, session, line): 'response logout command 'raise endsession class Loginroom (room): ''' room for the user just logged in ''' def add (self, session): Room. add (self, session) self. broadcast ('Welcome to % s \ r \ n' % self. server. name) def unknown (self, session, CMD): Session. push ('Please login \ nuse "Login <Nick>" \ r \ n') def do_login (self, session, line): name = line. strip () # a user name if not name: session must be specified during login. push ('Please enter a name \ r \ n') Elif name in self. server. users: # the user name cannot be repeated? Session. Push ('the name "% s" is taken! \ R \ n' % name) session. push ('Please try again. \ r \ n') else: Session. name = Name session. enter (self. server. main_room) Class chatroom (room): ''' the room ''' def add (self, session): # Tell all new one come self. broadcast (Session. name + 'has entered the room. \ r \ n') self. server. users [session. name] = session room. add (self, session) def remove (self, session): Room. remove (self. session) # Tell all the user logout self. broadcast (Session. name + 'has left the room \ r \ n') def do_say (self, session, line): Self. broadcast (Session. name + ':' + LINE + '\ r \ n') def do_look (self, session, line): 'Look who is in the room 'session. push ('the following are in this room: \ r \ n') for other in self. sessions: Session. push (Other. name + '\ r \ n') def do_who (self, session, line): 'check who has logged on to 'session. push ('the following are logged in: \ r \ n') for name in self. server. users: Session. push (name + '\ r \ n') Class logoutroom (room): ''' the room prepared for a single user, only used to remove ''' def add (self, session) from the server: Try: del self. server. users [session. name] cipher t keyerror: pass class chatsession (async_chat): ''' a single session, responsible for communicating with the user ''' def _ init _ (self, server, sock ): async_chat. _ init _ (self, sock) self. server = server self. set_terminator ('\ r \ n') self. data = [] self. name = none # log on to self from here for all sessions. enter (loginroom (server) def enter (self, room): Try: cur = self. room counter t attributeerror: Pass self. room = room. add (Self) def collect_incoming_data (self, data): Self. data. append (data) def found_terminator (Self): line = ''. join (self. data) self. data = [] Try: Self. room. handle (self, line) handle T endsession: Self. handle_close () def handle_close (Self): async_chat.handle_close (Self) self. enter (logoutroom (self. server) Class chatserver (dispatcher): ''' there is only one room Chat Server ''' def _ init _ (self, serverconf, name): dispatcher. _ init _ (Self) self. create_socket (socket. af_inet, socket. sock_stream) self. set_reuse_addr () # The last port number self can be reused. BIND (serverconf) self. listen (5) self. name = Name self. users = {} self. main_room = chatroom (Self) def handle_accept (Self): Conn, ADDR = self. accept () chatsession (self, Conn) # main function if _ name __= = '_ main _': S = chatserver (serverconf, name) Try: asyncore. loop () handle T keyboardinterrupt: Print 'server exception... quit'

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