Python-examples: Difference between revisions
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#REDIRECT [[Python snippets]] |
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__NOTOC__ |
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= Python: Examples = |
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== Server/Client == |
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Simple Server/Client communication, communication data is text. |
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==== Server ==== |
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<pre><nowiki> |
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import SocketServer |
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class EchoRequestHandler(SocketServer.BaseRequestHandler): |
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def setup(self): |
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print self.client_address, 'connected!' |
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self.request.send('hi ' + str(self.client_address) + '\n') |
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def handle(self): |
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while 1: |
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data = self.request.recv(1024) |
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self.request.send(data) |
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if data.strip() == 'bye': |
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return |
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def finish(self): |
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print self.client_address, 'disconnected!' |
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self.request.send('bye ' + str(self.client_address) + '\n') |
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#server host is a tuple ('host', port) |
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server = SocketServer.ThreadingTCPServer(('localhost', 5000), EchoRequestHandler) |
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server.serve_forever() |
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</nowiki></pre> |
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==== Client ==== |
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<pre><nowiki> |
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import socket |
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sock = socket.socket(socket.AF_INET, sock.SOCK_STREAM) |
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sock.connect(('localhost', 5000)) |
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print sock.recv(1024) |
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sock.send('bye') |
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</nowiki></pre> |
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== Subprocess in a Thread == |
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How to call an external command with `Popen`, a subprocess, inside of a thread. |
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<pre><nowiki> |
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import threading |
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import subprocess |
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class MyClass(threading.Thread): |
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def __init__(self): |
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self.stdout = None |
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self.stderr = None |
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threading.Thread.__init__(self) |
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def run(self): |
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p = subprocess.Popen('rsync -av /etc/passwd /tmp'.split(), |
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shell=False, |
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stdout=subprocess.PIPE, |
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stderr=subprocess.PIPE) |
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self.stdout, self.stderr = p.communicate() |
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myclass = MyClass() |
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myclass.start() |
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myclass.join() |
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print myclass.stdout |
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</nowiki></pre> |
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Latest revision as of 05:58, 18 June 2015
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