有人建议我futures为此使用包装。我尝试了，它似乎正在工作。
http://pypi.python.org/pypi/futures
这是一个例子：
"Download many URLs in parallel."
import functools
import urllib.request
import futures
URLS = ['http://www.foxnews.com/',
'http://www.cnn.com/',
'http://europe.wsj.com/',
'http://www.bbc.co.uk/',
'http://some-made-up-domain.com/']
def load_url(url, timeout):
return urllib.request.urlopen(url, timeout=timeout).read()
with futures.ThreadPoolExecutor(50) as executor:
future_list = executor.run_to_futures(
[functools.partial(load_url, url, 30) for url in URLS])
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