Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > comp.lang.python > #39582 > unrolled thread

gevent + urllib2 blocking

Back to article view | Back to comp.lang.python

Contents

  gevent + urllib2 blocking 月忧茗 <yueyoum@gmail.com> - 2013-02-22 23:40 +0800

#39582 — gevent + urllib2 blocking

[Multipart message — attachments visible in raw view] — view raw

Hi,

One problem, thanks for help.


import gevent.monkey
gevent.monkey.match_all()

from lxml import etree
# I using xpath parse the html


def _get(p):
    url = BUILD_URL(p)
    html = urllib2.urlopen(url)

    # RUN AT HERE AND BLOCKING

    # ver1
    tree = etree.parse(html, parse)

    # ver2
    # tree = etree.fromstring(html.read(), parse)

    ....


workers  = [gevent.spawn(_get, i) for i in xrange(1, 100)]
gevent.joinall(workers)



When using ver1,  etree.parse(html, parse)
I noticed there are only two greenlets runs at "RUN AT HERE AND BLOCKING"

others are not running!


But, when I using ver2,  this code will running normally as expected.


Why this ?

[toc] | [standalone]

Back to top | Article view | comp.lang.python

csiph-web