更新后我在scrapy中遇到sslv3错误。
2017-09-11 17:33:20 [scrapy.core.engine] INFO: Spider opened
2017-09-11 17:33:20 [scrapy.extensions.logstats] INFO: Crawled 0 pages (at 0 pages/min), scraped 0 items (at 0 items/min)
2017-09-11 17:33:20 [scrapy.extensions.telnet] DEBUG: Telnet console listening on 127.0.0.1:6025
2017-09-11 17:33:20 [scrapy.downloadermiddlewares.retry] DEBUG: Retrying <GET https://api.citypantry.com/packages/search?page=1&sortBy=relevance> (failed 1 times): [<twisted.python.failure.Failure OpenSSL.SSL.Error: [('SSL routines', 'ssl3_read_bytes', 'sslv3 alert handshake failure')]>]
版本：
Scrapy : 1.4.0
lxml : 3.8.0.0
libxml2 : 2.9.3
cssselect : 1.0.1
parsel : 1.2.0
w3lib : 1.18.0
Twisted : 17.5.0
Python : 2.7.12+ (default, Sep 17 2016, 12:08:02) - [GCC 6.2.0 20160914]
pyOpenSSL : 17.2.0 (OpenSSL 1.1.0f 25 May 2017)
Platform : Linux-4.8.0-59-generic-x86_64-with-Ubuntu-16.10-yakkety
它的工作原理是使用请求库。