import mechanize
import cookielib

from time import ctime,sleep

def run():
    print 'start!'
    for i in range(100):
        browse()
        print "run",i,"times ",ctime()
        sleep(1)

def browse():

    br = mechanize.Browser()

    cj = cookielib.LWPCookieJar()
    br.set_cookiejar(cj)

    br.set_handle_equiv(True)
    br.set_handle_gzip(True)
    br.set_handle_redirect(True)
    br.set_handle_referer(True)
    br.set_handle_robots(False)

    br.set_handle_refresh(mechanize._http.HTTPRefreshProcessor(), max_time=1)

    br.addheaders = [('User-agent', 'Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.0.1) Gecko/2008071615 Fedora/3.0.1-1.fc9 Firefox/3.0.1')]


    r = br.open('http://blog.csdn.net/zhou_yujia/article/details/70115839')

    html = r.read()

    #print html

run()
多线程版：
import mechanize
import cookielib
import threading
from time import ctime,sleep

def run():
    print 'start!'
    for i in range(100):
        browse()
        print "run",i,"times ",ctime()
        sleep(1)

def browse():

    br = mechanize.Browser()

    cj = cookielib.LWPCookieJar()
    br.set_cookiejar(cj)

    br.set_handle_equiv(True)
    br.set_handle_gzip(True)
    br.set_handle_redirect(True)
    br.set_handle_referer(True)
    br.set_handle_robots(False)

    br.set_handle_refresh(mechanize._http.HTTPRefreshProcessor(), max_time=1)

    br.addheaders = [('User-agent', 'Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.0.1) Gecko/2008071615 Fedora/3.0.1-1.fc9 Firefox/3.0.1')]


    
    r = br.open('http://blog.csdn.net/zhou_yujia/article/details/52319009')
    html = r.read()

    #print html

if __name__ == '__main__':
    threads = []
    for i in range(500):
        t1=threading.Thread(target=run)
        threads.append(t1)
    for t in threads:
        t.setDaemon(True)
        t.start()

    print "all over %s" %ctime()
#run()