when hanppen 403,why not can del bad proxy

[fyzhang]

2017-07-12 14:35:33 [scrapy.proxies] DEBUG: Using proxy http://208.92.94.191:1080, 91 proxies left
Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.0; Acoo Browser; SLCC1; .NET CLR 2.0.50727; Media Center PC 5.0; .NET CLR 3.0.04506)
/search/category/2/10/g251p6?aid=79417082%2C20944119%2C67545588%2C512124%2C4665606%2C2517868%2C68124250%2C77336676%2C19331058%2C91955011%2C52802565%2C92076417&cpt=79417082%2C20944119%2C67545588%2C512124%2C4665606%2C2517868%2C68124250%2C77336676%2C19331058%2C91955011%2C52802565%2C92076417&tc=1 ==================
2017-07-12 14:35:34 [scrapy.downloadermiddlewares.retry] DEBUG: Retrying <GET https://www.dianping.com/shop/70170698> (failed 1 times): 403 Forbidden
2017-07-12 14:35:34 [scrapy.proxies] DEBUG: Using proxy http://110.244.119.139:80, 91 proxies left
Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.0; Acoo Browser; SLCC1; .NET CLR 2.0.50727; Media Center PC 5.0; .NET CLR 3.0.04506)
2017-07-12 14:35:35 [scrapy.downloadermiddlewares.retry] DEBUG: Retrying <GET https://www.dianping.com/shop/507618> (failed 1 times): 403 Forbidden
2017-07-12 14:35:35 [scrapy.proxies] DEBUG: Using proxy http://125.89.121.179:808, 91 proxies left
Mozilla/5.0 (Windows; U; Windows NT 5.1; zh-CN; rv:1.9) Gecko/20080705 Firefox/3.0 Kapiko/3.0

[deepzliu]

set ROBOTSTXT_OBEY = False in settings.py