'unicode' object is not callable

sidooh 2010-08-05 03:01:37

import lxml.html

import urllib



num=1

while(num<=5):

    url = "http://www.sdzk.gov.cn/score/gaokao/2010/100804/Book"

    final_url = "http://www.sdzk.gov.cn/score/gaokao/2010/100804/Book"+str(num)+".htm"

    page = urllib.urlopen(final_url)

    str = page.read().decode("gb2312")





    doc = lxml.html.fromstring(str)

    name_ele = doc.cssselect("td")





    i = 26

    plan = 0

    post = 0

    while(i<len(name_ele)):

        if((i-26)%11==0):

            try:

                plan = int(name_ele[i+6].text)

                post = int(name_ele[i+8].text)

                print "%s,%d" % (name_ele[i].text,plan-post)

            except TypeError:

                print "None"

        i = i+1

   

    num = num+1

大家好,我写的这个程序最外面的循环第一次循环时没问题,第二次循环时便出现如下错误:
(第七行)TypeError: 'unicode' object is not callable

我不明白哪个是'unicode' object?
我改为

try:

   final_url = "http://www.sdzk.gov.cn/score/gaokao/2010/100804/Book"+str(num)+".htm"

except ValueError:

   final_url = "http://www.sdzk.gov.cn/score/gaokao/2010/100804/Book"+num+".htm"

便出现不能将数字与字符串直接连接的错误了

我该怎么办?希望大家帮帮我(我用的是python 2.5)

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