Enviar / sincronizar variable / texto a través de LAN en Python 3

Bien, quería hacer una aplicación de python que me permita enviar un mensaje a través de LAN.

Aquí está el código que “funciona” “localmente” (imagina que estoy formando 2 de mis dedos para hacer un “en esas 2 palabras)

username = input("username: ") run = 1 while run == 1: message = input(username + ": ") if message == "exit": print(username + " left") run = 0 else: print(username + ": " + message) 

Mi pregunta ¿Cómo envío la variable “mensaje” a través de LAN?

No puedo enviar el mensaje variable a través de LAN a otra PC e imprimirlo en él y al revés.

Aquí hay varios archivos que pueden ayudarlo a desarrollar un sistema de mensajería para su LAN.


Simple_Server.py

 #! /usr/bin/env python3 import socket, select def main(): a = [socket.socket(socket.AF_INET, socket.SOCK_STREAM)] # socket array a[0].bind(('', 8989)) a[0].listen(5) while True: for b in select.select(a, [], [])[0]: # ready socket if b is a[0]: a.append(b.accept()[0]) else: try: c = b.recv(1 << 12) # sent message except socket.error: b.shutdown(socket.SHUT_RDWR) b.close() a.remove(b) else: for d in (d for d in a[1:] if d is not b): # message sink d.sendall(c) if __name__ == '__main__': main() 

MultichatClient.py

 #! /usr/bin/env python3 from safetkinter import * from tkinter.constants import * import socket import sys class MultichatClient(Frame): after_handle = None def __init__(self, master, remote_host): super().__init__(master) self.message_area = ScrolledText(self, width=81, height=21, wrap=WORD, state=DISABLED) self.message_area.grid(sticky=NSEW, columnspan=2) self.send_area = Entry(self) self.send_area.bind('', self.keyPressed) self.send_area.grid(sticky=EW) b = Button(self, text='Send', command=self.mouseClicked) b.grid(row=1, column=1) self.send_area.focus_set() try: self.remote = socket.create_connection((remote_host, 8989)) except socket.gaierror: print('Could not find host {}.'.format(remote_host)) except socket.error: print('Could not connect to host {}.'.format(remote_host)) else: self.remote.setblocking(False) self.after_handle = self.after_idle(self.dataready) self.grid_rowconfigure(0, weight=1) self.grid_columnconfigure(0, weight=1) @classmethod def main(cls, args): root = Tk() root.title('MultichatClient version 1.0') m = cls(root, args[0]) m.grid(sticky=NSEW) root.grid_rowconfigure(0, weight=1) root.grid_columnconfigure(0, weight=1) root.mainloop() return 1 def dataready(self): try: s = self.remote.recv(1 << 12).decode() except socket.error: pass else: self.message_area['state'] = NORMAL self.message_area.insert(END, s) self.message_area['state'] = DISABLED self.message_area.see(END) self.after_handle = self.after(100, self.dataready) def destroy(self): if self.after_handle: self.after_cancel(self.after_handle) super().destroy() def mouseClicked(self, e=None): self.remote.sendall(self.send_area.get().encode() + b'\r\n') self.send_area.delete(0, END) keyPressed = mouseClicked if __name__ == '__main__': sys.exit(MultichatClient.main(sys.argv[1:])) 

Simple_Client.pyw

 #! /usr/bin/env python3 """Provide a GUI for easy interactions with Multichat servers. This program is an example of a first attempt at implementing a client for interacting with a Multichat server through purely graphical means.""" __author__ = 'Stephen "Zero" Chappell ' __date__ = '11 October 2012' __version__ = 1, 0, 0 ################################################################################ from tkinter.messagebox import * from tkinter.constants import * from safetkinter import * import logging import traceback import _thread import socket import os import traceback import sys import threadbox ################################################################################ class SimpleClient(Frame): "SimpleClient(master, **kw) -> SimpleClient instance" @classmethod def main(cls): "Create a GUI root and demonstrate the SimpleClient widget." root = Tk() root.title('Chat Client') root.minsize(675, 450) root.grid_rowconfigure(0, weight=1) root.grid_columnconfigure(0, weight=1) root.bind_all('', cls.handle_control_a) frame = cls(root) frame.grid(sticky=NSEW) root.mainloop() @staticmethod def handle_control_a(event): "Process Ctrl-A commands by widget type." widget = event.widget if isinstance(widget, Text): widget.tag_add(SEL, 1.0, END + '-1c') return 'break' if isinstance(widget, Entry): widget.selection_range(0, END) return 'break' def __init__(self, master, **kw): "Initialize the SimpleClient instance with the widgets it contains." super().__init__(master, **kw) self.grid_rowconfigure(0, weight=1) self.grid_columnconfigure(0, weight=1) # Build Widgets self.output_area = ScrolledText(self, width=25, height=4, wrap=WORD) self.input_area = Entry(self) self.corner = Sizegrip(self) # Place Widgets self.output_area.grid(row=0, column=0, columnspan=2, sticky=NSEW) self.input_area.grid(row=1, column=0, sticky=EW) self.corner.grid(row=1, column=1, sticky=SE) # Setup Widgets self.output_area['state'] = DISABLED self.input_area.bind('', self.send) self.after_idle(self.connect) def connect(self): "Try connecting to a server to begin chatting." self.connection = Connector(self, 'Chat Client').connection if self.connection is None: self._root().destroy() else: self.connection.setblocking(False) self.after_idle(self.update) def send(self, event): "Send a message across the connection from the given widget." self.connection.sendall(event.widget.get().encode() + b'\r\n') event.widget.delete(0, END) def update(self): "Update the output area with any incoming messages." self.output_area['state'] = NORMAL try: self.output_area.insert(END, self.connection.recv(1 << 12).decode()) except socket.error: pass else: self.output_area.see(END) finally: self.output_area['state'] = DISABLED self.after(100, self.update) ################################################################################ def start_thread(function, *args, **kwargs): "Start a new thread of execution while logging any errors." _thread.start_new_thread(log_errors, (function, args, kwargs)) def log_errors(function, args=(), kwargs={}): "Execute a function with its arguments and log any exceptions." try: function(*args, **kwargs) except SystemExit: pass except: basename = os.path.basename(sys.argv[0]) filename = os.path.splitext(basename)[0] + '.log' logging.basicConfig(filename=filename) logging.error(traceback.format_exc()) ################################################################################ class Dialog(Toplevel): # Copies tkinter.simpledialog.Dialog "Dialog(parent, title=None) -> Dialog instance" def __init__(self, parent, title=None): "Initialize a Dialog window that takes focus away from the parent." super().__init__(parent) self.withdraw() if parent.winfo_viewable(): self.transient(parent) if title: self.title(title) self.parent = parent self.result = None body = Frame(self) self.initial_focus = self.body(body) body.grid(sticky=NSEW, padx=5, pady=5) self.buttonbox() if not self.initial_focus: self.initial_focus = self self.protocol('WM_DELETE_WINDOW', self.cancel) if self.parent is not None: self.geometry('+{}+{}'.format(parent.winfo_rootx() + 50, parent.winfo_rooty() + 50)) self.deiconify() self.initial_focus.focus_set() try: self.wait_visibility() except tkinter.TclError: pass else: self.grab_set() self.wait_window(self) def destroy(self): "Destruct the Dialog window." self.initial_focus = None super().destroy() def body(self, master): "Create the body of this Dialog window." pass def buttonbox(self): "Create the standard buttons and Dialog bindings." box = Frame(self) w = Button(box, text='OK', width=10, command=self.ok, default=ACTIVE) w.grid(row=0, column=0, padx=5, pady=5) w = Button(box, text='Cancel', width=10, command=self.cancel) w.grid(row=0, column=1, padx=5, pady=5) self.bind('', self.ok) self.bind('', self.cancel) box.grid() def ok(self, event=None): "Validate and apply the changes made by this Dialog." if not self.validate(): self.initial_focus.focus_set() return self.withdraw() self.update_idletasks() try: self.apply() finally: self.cancel() def cancel(self, event=None): "Close the Dialong window and return to its parent." if self.parent is not None: self.parent.focus_set() self.destroy() def validate(self): "Verify that the Dialog is in a valid state." return True def apply(self): "Make any changes the Dialog wishes to accomplish." pass ################################################################################ class Connector(Dialog): "Connector(parent, title=None) -> Connector instance" def body(self, master): "Customize the Dialog window with some custom widgets." self.connection = None self.resizable(False, False) # Build Widgets self.prompt = Label(master, text='Enter server IP address:') self.address = Entry(master) # Place Widgets self.prompt.grid(sticky=W, padx=30, pady=2) self.address.grid(sticky=W, padx=30) def buttonbox(self): "Redefine the buttons at the bottom of the window." w = Button(self, text='Connect', width=10, command=self.ok, default=ACTIVE) w.grid(sticky=E, padx=5, pady=5) self.bind('', self.ok) self.bind('', self.cancel) def validate(self): "Ask a Consumtor to make a connection with the given address." c = Consumtor(self, 'Chat Client', (self.address.get(), 8989)) if c.connection is None: Message(self, icon=WARNING, type=OK, title='Warning', message='Could not connect to address!').show() return False self.connection = c.connection return True ################################################################################ class Consumtor(Dialog): "Consumtor(parent, title, address) -> Consumtor instance" def __init__(self, parent, title, address): "Initialize the Consumtor with the server's address." self.server_address = address super().__init__(parent, title) def body(self, master): "Create the widgets for this Dialog and start the connection process." self.connection = None self.resizable(False, False) # Build Widgets self.message = Label(master, text='Trying to connect to address ...') self.progress = Progressbar(master, orient=HORIZONTAL) # Place Widgets self.message.grid(sticky=W, padx=10, pady=2) self.progress.grid(sticky=EW, padx=10, pady=2) # Setup Widgets self.progress.configure(mode='indeterminate', maximum=30) self.progress.start() result = [] start_thread(self.connect, result) self.after_idle(self.poll, result) def buttonbox(self): "Cancel the creation of the buttons at the bottom of this Dialog." pass @threadbox.MetaBox.thread def connect(self, result): "Try connecting to the server address that was given." try: result.append(socket.create_connection(self.server_address, 10)) except socket.timeout: result.append(None) def poll(self, result): "Find out if the any connection information is available yet." if result: self.connection = result[0] self.cancel() else: self.after(100, self.poll, result) ################################################################################ if __name__ == '__main__': log_errors(SimpleClient.main) 

affinity.py

 """Allow a simple way to ensure execution is confined to one thread. This module defines the Affinity data type that runs code on a single thread. An instance of the class will execute functions only on the thread that made the object in the first place. The class is useful in a GUI's main loop.""" __author__ = 'Stephen "Zero" Chappell ' __date__ = '4 June 2012' __version__ = 1, 0, 0 ################################################################################ import sys import _thread import queue ################################################################################ def slots(names=''): "Sets the __slots__ variable in the calling context with private names." sys._getframe(1).f_locals['__slots__'] = \ tuple('__' + name for name in names.replace(',', ' ').split()) ################################################################################ class Affinity: "Affinity() -> Affinity instance" slots('thread, action') def __init__(self): "Initializes instance with thread identity and job queue." self.__thread = _thread.get_ident() self.__action = queue.Queue() def __call__(self, func, *args, **kwargs): "Executes function on creating thread and returns result." if _thread.get_ident() == self.__thread: while not self.__action.empty(): self.__action.get_nowait()() return func(*args, **kwargs) delegate = _Delegate(func, args, kwargs) self.__action.put_nowait(delegate) return delegate.value ################################################################################ class _Delegate: "_Delegate(func, args, kwargs) -> _Delegate instance" slots('func, args, kwargs, mutex, value, error') def __init__(self, func, args, kwargs): "Initializes instance from arguments and prepares to run." self.__func = func self.__args = args self.__kwargs = kwargs self.__mutex = _thread.allocate_lock() self.__mutex.acquire() def __call__(self): "Executes code with arguments and allows value retrieval." try: self.__value = self.__func(*self.__args, **self.__kwargs) self.__error = False except: self.__value = sys.exc_info()[1] self.__error = True self.__mutex.release() @property def value(self): "Waits for value availability and raises or returns data." self.__mutex.acquire() if self.__error: raise self.__value return self.__value 

threadbox.py

 """Provide a way to run instance methods on a single thread. This module allows hierarchical classes to be cloned so that their instances run on one thread. Method calls are automatically routed through a special execution engine. This is helpful when building thread-safe GUI code.""" __author__ = 'Stephen "Zero" Chappell ' __date__ = '9 October 2012' __version__ = 1, 0, 1 ################################################################################ import functools import affinity ################################################################################ class _object: __slots__ = '_MetaBox__exec', '__dict__' ################################################################################ class MetaBox(type): "MetaBox(name, bases, classdict, old=None) -> MetaBox instance" __REGISTRY = {object: _object} __SENTINEL = object() @classmethod def clone(cls, old, update=()): "Creates a class preferring thread affinity after update." classdict = dict(old.__dict__) classdict.update(update) return cls(old.__name__, old.__bases__, classdict, old) @classmethod def thread(cls, func): "Marks a function to be completely threaded when running." func.__thread = cls.__SENTINEL return func def __new__(cls, name, bases, classdict, old=None): "Allocates space for a new class after altering its data." assert '__new__' not in classdict, '__new__ must not be defined!' assert '__slots__' not in classdict, '__slots__ must not be defined!' assert '__module__' in classdict, '__module__ must be defined!' valid = [] for base in bases: if base in cls.__REGISTRY: valid.append(cls.__REGISTRY[base]) elif base in cls.__REGISTRY.values(): valid.append(base) else: valid.append(cls.clone(base)) for key, value in classdict.items(): if callable(value) and (not hasattr(value, '_MetaBox__thread') or value.__thread is not cls.__SENTINEL): classdict[key] = cls.__wrap(value) classdict.update({'__new__': cls.__new, '__slots__': (), '__module__': '{}.{}'.format(__name__, classdict['__module__'])}) cls.__REGISTRY[object() if old is None else old] = new = \ super().__new__(cls, name, tuple(valid), classdict) return new def __init__(self, name, bases, classdict, old=None): "Initializes class instance while ignoring the old class." return super().__init__(name, bases, classdict) @staticmethod def __wrap(func): "Wraps a method so execution runs via an affinity engine." @functools.wraps(func) def box(self, *args, **kwargs): return self.__exec(func, self, *args, **kwargs) return box @classmethod def __new(meta, cls, *args, **kwargs): "Allocates space for instance and finds __exec attribute." self = object.__new__(cls) if 'master' in kwargs: self.__exec = kwargs['master'].__exec else: valid = tuple(meta.__REGISTRY.values()) for value in args: if isinstance(value, valid): self.__exec = value.__exec break else: self.__exec = affinity.Affinity() return self 

safetkinter.py

 """Register tkinter classes with threadbox for immediate usage. This module clones several classes from the tkinter library for use with threads. Instances from these new classes should run on whatever thread the root was created on. Child classes inherit the parent's safety.""" __author__ = 'Stephen "Zero" Chappell ' __date__ = '4 June 2012' __version__ = 1, 0, 0 ################################################################################ import time import tkinter.filedialog import tkinter.font import tkinter.messagebox import tkinter.scrolledtext import tkinter.ttk import threadbox ################################################################################ tkinter.NoDefaultRoot() @threadbox.MetaBox.thread def mainloop(self): "Creates a synthetic main loop so that threads can still run." while True: try: self.update() except tkinter.TclError: break else: time.sleep(tkinter._tkinter.getbusywaitinterval() / 1000) threadbox.MetaBox.clone(tkinter.Misc, {'mainloop': mainloop}) ################################################################################ OldButton = threadbox.MetaBox.clone(tkinter.Button) Canvas = threadbox.MetaBox.clone(tkinter.Canvas) OldFrame = threadbox.MetaBox.clone(tkinter.Frame) Menu = threadbox.MetaBox.clone(tkinter.Menu) PhotoImage = threadbox.MetaBox.clone(tkinter.PhotoImage) Spinbox = threadbox.MetaBox.clone(tkinter.Spinbox) StringVar = threadbox.MetaBox.clone(tkinter.StringVar) Text = threadbox.MetaBox.clone(tkinter.Text) Tk = threadbox.MetaBox.clone(tkinter.Tk) Toplevel = threadbox.MetaBox.clone(tkinter.Toplevel) ################################################################################ Button = threadbox.MetaBox.clone(tkinter.ttk.Button) Checkbutton = threadbox.MetaBox.clone(tkinter.ttk.Checkbutton) Entry = threadbox.MetaBox.clone(tkinter.ttk.Entry) Frame = threadbox.MetaBox.clone(tkinter.ttk.Frame) Label = threadbox.MetaBox.clone(tkinter.ttk.Label) Labelframe = threadbox.MetaBox.clone(tkinter.ttk.Labelframe) Progressbar = threadbox.MetaBox.clone(tkinter.ttk.Progressbar) Radiobutton = threadbox.MetaBox.clone(tkinter.ttk.Radiobutton) Scale = threadbox.MetaBox.clone(tkinter.ttk.Scale) Scrollbar = threadbox.MetaBox.clone(tkinter.ttk.Scrollbar) Sizegrip = threadbox.MetaBox.clone(tkinter.ttk.Sizegrip) Treeview = threadbox.MetaBox.clone(tkinter.ttk.Treeview) ################################################################################ Directory = threadbox.MetaBox.clone(tkinter.filedialog.Directory) Font = threadbox.MetaBox.clone(tkinter.font.Font) Message = threadbox.MetaBox.clone(tkinter.messagebox.Message) ScrolledText = threadbox.MetaBox.clone(tkinter.scrolledtext.ScrolledText)