Python:从Gevent Greenlet获取价值

Question

我正在学习Gevent，但无法获得greenlet中调用的函数返回的值。以下代码：

import gevent.monkey
gevent.monkey.patch_socket()
import gevent
from gevent import Greenlet
import urllib2
import simplejson as json
def fetch(pid):
    response = urllib2.urlopen('http://time.jsontest.com')
    result = response.read()
    json_result = json.loads(result)
    datetime = json_result['time']
    print('Process %s: %s' % (pid, datetime))
    return json_result['time']
def synchronous():
    for i in range(1,10):
        fetch(i)
def asynchronous():
    threads = [Greenlet.spawn(fetch, i) for i in range(10)]
    result = gevent.joinall(threads)
    print [Greenlet.value(thread) for thread in threads]
print('Synchronous:')
synchronous()
print('Asynchronous:')
asynchronous()

给我一个错误：

print [Greenlet.value(thread) for thread in threads]
AttributeError: type object 'Greenlet' has no attribute 'value'

我做错了什么？我如何从每个绿绿灯中获得价值？

Answer 1

根据http://www.gevent.org/intro.html你想要

def asynchronous():
    threads = [Greenlet.spawn(fetch, i) for i in range(10)]
    gevent.joinall(threads)
    print([thread.value for thread in threads])