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twisted-sample.py
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twisted-sample.py
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from twisted.internet import defer, reactor
from twisted.web.client import getPage
import time
def processPage(page, url):
# do somewthing here.
return url, len(page)
def printResults(result):
for success, value in result:
if success:
print 'Success:', value
else:
print 'Failure:', value.getErrorMessage()
def printDelta(_, start):
delta = time.time() - start
print 'ran in %0.3fs' % (delta,)
return delta
urls = [
'http://www.google.com/',
'http://www.lycos.com/',
'http://www.bing.com/',
'http://www.altavista.com/',
'http://achewood.com/',
]
def fetchURLs():
callbacks = []
for url in urls:
d = getPage(url)
d.addCallback(processPage, url)
callbacks.append(d)
callbacks = defer.DeferredList(callbacks)
callbacks.addCallback(printResults)
return callbacks
def done(a):
print "Stopping..."
reactor.stop()
@defer.inlineCallbacks
def main():
times = []
for x in xrange(5):
d = fetchURLs()
d.addCallback(printDelta, time.time())
times.append((yield d))
print 'avg time: %0.3fs' % (sum(times) / len(times),)
d.addBoth(done)
reactor.callWhenRunning(main)
reactor.run()