請(qǐng)教一下各位前輩，為什么我的代碼劃線部分response.getcode()什么也沒有返回？
#-*- encoding:utf-8 -*-
import urllib2
class HtmlDownloader(object):
??? def download(self,url):
??????? if url is None:
??????????? return None
??????? response = urllib2.urlopen(url)
??????? if response.getcode != 200:
??????????? print response.getcode
??????????? print "no1"
??????????? return None
??????? return? response.read()
錯(cuò)誤顯示：
craw 1 : http://baike.baidu.com/link?url=2WsqZVK8vmWBq1EuKxUBEySblRoynkjp95XUJEwsPksjnwAGnky-PjpfRea3uwx8SxIetlpyWAIDufMBrybhErrwqAwzfA2OUAO31DuyGb9LE0DWW_T6zXKo1AlmNEGSvye6nY1YN56D8D3AKOZVJXdPH0e68wbSpsmf4mowr7UzaiYEKkrqqRRTELV1M7XU
<bound method addinfourl.getcode of <addinfourl at 39528088 whose fp = <socket._fileobject object at 0x025C3530>>>
Traceback (most recent call last):
no1
? File "D:/PycharmProjects/study/baike_spider/spider_main.py", line 35, in <module>
??? obj_spider.craw(root_url)
? File "D:/PycharmProjects/study/baike_spider/spider_main.py", line 18, in craw
??? new_urls,new_data = self.parser.parse(new_url,html_const)
TypeError: 'NoneType' object is not iterable
Process finished with exit code 1
