python之为什么我的 Python 程序总是出现这个标题匹配错误

当我运行以下代码时，我不断收到此错误:

Traceback (most recent call last): 
  File "C:\Users\Robert\Documents\j-a-c-o-b\newlc.py", line 94, in <module> 
    main() 
  File "C:\Users\Robert\Documents\j-a-c-o-b\newlc.py", line 71, in main 
    for final_url in pool.imap(handle_listing, listings): 
  File "C:\Python27\lib\site-packages\eventlet-0.9.16-py2.7.egg\eventlet\greenpool.py", line 232, in next 
    val = self.waiters.get().wait() 
  File "C:\Python27\lib\site-packages\eventlet-0.9.16-py2.7.egg\eventlet\greenthread.py", line 166, in wait 
    return self._exit_event.wait() 
  File "C:\Python27\lib\site-packages\eventlet-0.9.16-py2.7.egg\eventlet\event.py", line 120, in wait 
    current.throw(*self._exc) 
  File "C:\Python27\lib\site-packages\eventlet-0.9.16-py2.7.egg\eventlet\greenthread.py", line 192, in main 
    result = function(*args, **kwargs) 
  File "C:\Users\Robert\Documents\j-a-c-o-b\newlc.py", line 35, in handle_listing 
    title, = TITLE_MATCH.match(listing_title).groups() 
AttributeError: 'NoneType' object has no attribute 'groups' 

怎么了？

它与标题匹配有关，但我不知道如何解决它!

如果你能帮助我，我将不胜感激!

谢谢!

from gzip import GzipFile 
from cStringIO import StringIO 
import re 
import webbrowser 
import time 
from difflib import SequenceMatcher 
import os 
import sys 
from BeautifulSoup import BeautifulSoup 
import eventlet 
from eventlet.green import urllib2 
import urllib2 
import urllib 
 
def download(url): 
    print "Downloading:", url 
    s = urllib2.urlopen(url).read() 
    if s[:2] == '\x1f\x8b': 
        ifh = GzipFile(mode='rb', fileobj=StringIO(s)) 
        s = ifh.read() 
    print "Downloaded: ", url 
    return s 
 
def replace_chars(text, replacements): 
    return ''.join(replacements.get(x,x) for x in text) 
 
def handle_listing(listing_url): 
    listing_document = BeautifulSoup(download(listing_url)) 
 
    # ignore pages that link to yellowpages 
    if not listing_document.find("a", href=re.compile(re.escape("http://www.yellowpages.com/") + ".*")): 
        listing_title = listing_document.title.text 
        reps = {' ':'-', ',':'', '\'':'', '[':'', ']':''} 
        title, = TITLE_MATCH.match(listing_title).groups() 
        address, = ADDRESS_MATCH.match(listing_title).groups() 
 
        yellow_page_url = "http://www.yellowpages.com/%s/%s?order=distance" % ( 
            replace_chars(address, reps), 
            replace_chars(title, reps), 
        ) 
 
        yellow_page = BeautifulSoup(download(yellow_page_url)) 
 
        page_url = yellow_page.find("h3", {"class" : "business-name fn org"}) 
        if page_url: 
            page_url = page_url.a["href"] 
 
            business_name = title[:title.index(",")] 
 
            page = BeautifulSoup(download(page_url)) 
            yellow_page_address =  page.find("span", {"class" : "street-address"}) 
            if yellow_page_address: 
 
                if SequenceMatcher(None, address, yellow_page_address.text).ratio() >= 0.5: 
                    pid, = re.search(r'p(\d{5,20})\.jsp', listing_url).groups(0) 
                    page_escaped = replace_chars(page_url, {':':'%3A', '/':'%2F', '?':'%3F', '=':'%3D'}) 
 
                    final_url = "http://www.locationary.com/access/proxy.jsp?ACTION_TOKEN=proxy_jsp$JspView$SaveAction&inPlaceID=%s&xxx_c_1_f_987=%s" % ( 
                            pid, page_escaped) 
                    return final_url 
 
 
def main(): 
 
    pool = eventlet.GreenPool() 
    listings_document = BeautifulSoup(download(START_URL)) 
    listings = listings_document.findAll("a", href = LOCATION_LISTING) 
    listings = [listing['href'] for listing in listings] 
 
    for final_url in pool.imap(handle_listing, listings): 
        print final_url 
 
 
        if str(final_url) is not None: 
 
            url = str(final_url) 
 
            req = urllib2.Request(url) 
            response = urllib2.urlopen(req) 
            page = response.read() 
            time.sleep(2) 
 
 
 
for a in range(2,3): 
 
    START_URL = 'http://www.locationary.com/place/en/US/New_Jersey/Randolph-page' + str(a) + '/?ACTION_TOKEN=NumericAction' 
    TITLE_MATCH = re.compile(r'(.*) \(\d{1,10}.{1,100}\)$') 
    ADDRESS_MATCH = re.compile(r'.{1,100}\((.*), .{4,14}, United States\)$') 
    LOCATION_LISTING = re.compile(r'http://www\.locationary\.com/place/en/US/.{1,50}/.{1,50}/.{1,100}\.jsp') 
 
    if __name__ == '__main__': 
        main() 

请您参考如下方法:

引用你的错误:

title, = TITLE_MATCH.match(listing_title).groups()
AttributeError: 'NoneType' object has no attribute 'groups'

TITLE_MATCH.match(listing_title) 返回 None，因此您不能调用 .groups()。