some source code about twisted

1_7.http_proxy_server/python/twisted-intro-dave/basic-twisted/countdown.py

@@ -0,0 +1,20 @@
+
+class Countdown(object):
+
+    counter = 5
+
+    def count(self):
+        if self.counter == 0:
+            reactor.stop()
+        else:
+            print self.counter, '...'
+            self.counter -= 1
+            reactor.callLater(1, self.count)
+
+from twisted.internet import reactor
+
+reactor.callWhenRunning(Countdown().count)
+
+print 'Start!'
+reactor.run()
+print 'Stop!'

1_7.http_proxy_server/python/twisted-intro-dave/basic-twisted/exception.py

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+
+def falldown():
+    raise Exception('I fall down.')
+
+def upagain():
+    print 'But I get up again.'
+    reactor.stop()
+
+from twisted.internet import reactor
+
+reactor.callWhenRunning(falldown)
+reactor.callWhenRunning(upagain)
+
+print 'Starting the reactor.'
+reactor.run()

1_7.http_proxy_server/python/twisted-intro-dave/basic-twisted/hello.py

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+
+def hello():
+    print 'Hello from the reactor loop!'
+    print 'Lately I feel like I\'m stuck in a rut.'
+
+from twisted.internet import reactor
+
+reactor.callWhenRunning(hello)
+
+print 'Starting the reactor.'
+reactor.run()

1_7.http_proxy_server/python/twisted-intro-dave/basic-twisted/log.py

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+import sys
+
+from twisted.python import log
+from twisted.internet import defer
+
+"""This example illustrates some Twisted logging basics."""
+
+log.msg('This will not be logged, we have not installed a logger.')
+
+log.startLogging(sys.stdout)
+
+log.msg('This will be logged.')
+log.err('This will be logged as an error.')
+
+def bad_callback(result):
+    xxx
+
+try:
+    bad_callback()
+except:
+    log.err('The next function call will log the traceback as an error.')
+    log.err()
+
+d = defer.Deferred()
+
+def on_error(failure):
+    log.err('The next function call will log the failure as an error.')
+    log.err(failure)
+
+d.addCallback(bad_callback)
+d.addErrback(on_error)
+
+d.callback(True)
+
+log.msg('End of example.')

1_7.http_proxy_server/python/twisted-intro-dave/basic-twisted/simple-poll.py

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+from twisted.internet import pollreactor
+pollreactor.install()
+
+from twisted.internet import reactor
+reactor.run()

1_7.http_proxy_server/python/twisted-intro-dave/basic-twisted/simple.py

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+from twisted.internet import reactor
+reactor.run()

1_7.http_proxy_server/python/twisted-intro-dave/basic-twisted/stack.py

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+import traceback
+
+def stack():
+    print 'The python stack:'
+    traceback.print_stack()
+
+from twisted.internet import reactor
+reactor.callWhenRunning(stack)
+reactor.run()