为什么python取不到日志里面的爬虫

  logfile = open(filepath,'r')

 #   source_ip_dict={}
    res_url_dict={}
    from_url_dict={}
    category_dict={}

    print('start.....')
    for line in logfile:
        line=line.strip()
        if line!="":
            reg='"[GETPUOSHADINS]{5,12} /'
            url_start = re.compile(reg)
            re_result = url_start.findall(line)
            if len(re_result)>=1:
                res_url = '"'+line.split(re_result[0])[1].split(' ')[0]

                category = strip_detail(res_url.split('/'))
                if len(category)>=1:
                    if category[0] in ['360Spider','bingbot','Baiduspider','Googlebot','MediavBot','DotBot','YisouSpider','YandexBot']:
                        if category_dict.get(category[0],'-')=='-':
                            category_dict[category[0]]=1
                        else:
                            category_dict[category[0]]=category_dict[category[0]]+1
                    for cate in category:
                        if cate.find('category')!=-1:
                            if category_dict.get('category','-')=='-':
                                category_dict['category']=1
                            else:
                                category_dict['category']=category_dict['category']+1

                if res_url.endswith('.jpg') or res_url.endswith('.css') or res_url.endswith('.js') or res_url.endswith('.png') or res_url.endswith('.gif'):
                    pass
                else:
                    if res_url.find(r'.css?')!=-1 or res_url.find(r'.js?')!=-1:
                        pass
                    else:
                        if res_url_dict.get(res_url,'-')=='-':
                            res_url_dict[res_url]=1
                        else:
                            res_url_dict[res_url]=res_url_dict[res_url]+1



    logfile.close()

以上是我的代码

这个是日志的格式

 61.182.137.6 - - [21/Apr/2017:00:00:37 +0800] 0 "HEAD / HTTP/1.1" 200 - "-" "Baidu-YunGuanCe-SLABot(ce.baidu.com)"
123.125.71.89 - - [21/Apr/2017:00:00:38 +0800] 0 "GET /article/515140 HTTP/1.1" 200 10315 "-" "Mozilla/5.0 (compatible; Baiduspider/2.0; +http://www.baidu.com/search/spider.html)"
216.244.66.229 - - [21/Apr/2017:00:00:39 +0800] 0 "GET /article/330012 HTTP/1.1" 200 29593 "-" "Mozilla/5.0 (compatible; DotBot/1.1; http://www.opensiteexplorer.org/dotbot, help@moz.com)"

我想要把蜘蛛的类型都提取出来，进行统计数量

就是'360Spider','bingbot','Baiduspider','Googlebot','MediavBot','DotBot','YisouSpider'

这些爬虫

先看你正则是否正确，re resuli有没有拿到数据。