使用pycurl获取多个页面？ [英] get many pages with pycurl?

问题描述

我想从网站获取许多网页，例如

I want to get many pages from a website, like

curl "http://farmsubsidy.org/DE/browse?page=[0000-3603]" -o "de.#1"

页面数据在python，而不是磁盘文件。
有人可以发布 pycurl 代码来执行此操作，

或快速 urllib2 （不是一次一个），如果可能的话，

或者说忘记它，卷曲更快，更健壮？感谢

but get the pages' data in python, not disk files. Can someone please post pycurl code to do this,
or fast urllib2 (not one-at-a-time) if that's possible,
or else say "forget it, curl is faster and more robust" ? Thanks

推荐答案

这里是基于urllib2和线程的解决方案。

here is a solution based on urllib2 and threads.

import urllib2
from threading import Thread

BASE_URL = 'http://farmsubsidy.org/DE/browse?page='
NUM_RANGE = range(0000, 3603)
THREADS = 2

def main():
    for nums in split_seq(NUM_RANGE, THREADS):
        t = Spider(BASE_URL, nums)
        t.start()

def split_seq(seq, num_pieces):
    start = 0
    for i in xrange(num_pieces):
        stop = start + len(seq[i::num_pieces])
        yield seq[start:stop]
        start = stop

class Spider(Thread):
    def __init__(self, base_url, nums):
        Thread.__init__(self)
        self.base_url = base_url
        self.nums = nums
    def run(self):
        for num in self.nums:
            url = '%s%s' % (self.base_url, num)
            data = urllib2.urlopen(url).read()
            print data

if __name__ == '__main__':
    main()

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