centos7 scrapy 创建项目报错 TLSVersion.TLSv1_1: SSL.OP_NO_TLSv1_1,

centos7 

python2.7

安装完pip后

执行命令创建项目：

scrapy startproject todayMovie

结果报错了，如下：

[root@lhy-v7-21 scrapycrawler]# scrapy startproject todayMovieTraceback (most recent call last):  File "/usr/bin/scrapy", line 7, in <module>    from scrapy.cmdline import execute  File "/usr/lib64/python2.7/site-packages/scrapy/cmdline.py", line 9, in <module>    from scrapy.crawler import CrawlerProcess  File "/usr/lib64/python2.7/site-packages/scrapy/crawler.py", line 7, in <module>    from twisted.internet import reactor, defer  File "/usr/lib64/python2.7/site-packages/twisted/internet/reactor.py", line 38, in <module>    from twisted.internet import default  File "/usr/lib64/python2.7/site-packages/twisted/internet/default.py", line 56, in <module>    install = _getInstallFunction(platform)  File "/usr/lib64/python2.7/site-packages/twisted/internet/default.py", line 44, in _getInstallFunction    from twisted.internet.epollreactor import install  File "/usr/lib64/python2.7/site-packages/twisted/internet/epollreactor.py", line 24, in <module>    from twisted.internet import posixbase  File "/usr/lib64/python2.7/site-packages/twisted/internet/posixbase.py", line 18, in <module>    from twisted.internet import error, udp, tcp  File "/usr/lib64/python2.7/site-packages/twisted/internet/tcp.py", line 28, in <module>    from twisted.internet._newtls import (  File "/usr/lib64/python2.7/site-packages/twisted/internet/_newtls.py", line 21, in <module>    from twisted.protocols.tls import TLSMemoryBIOFactory, TLSMemoryBIOProtocol  File "/usr/lib64/python2.7/site-packages/twisted/protocols/tls.py", line 63, in <module>    from twisted.internet._sslverify import _setAcceptableProtocols  File "/usr/lib64/python2.7/site-packages/twisted/internet/_sslverify.py", line 38, in <module>    TLSVersion.TLSv1_1: SSL.OP_NO_TLSv1_1,AttributeError: 'module' object has no attribute 'OP_NO_TLSv1_1'

后面搜索问题，网上提供了各种各样的解决方案。比如我近照网上说的安装了如下：

 yum install python-devel

pip install pyopenssl –upgrade

也没有用，后面升级更新系统和pip也没用

后面就安装了这个版本，

twisted，网上说不能安装太高的版本，可以先查看scrapy需要怎么样的版本再安装怎么样的版本。如：

[root@lhy-v7-21 scrapycrawler]# pip install scrapyRequirement already satisfied: scrapy in /usr/lib64/python2.7/site-packagesRequirement already satisfied: pyOpenSSL in /usr/lib64/python2.7/site-packages (from scrapy)Requirement already satisfied: parsel>=1.1 in /usr/lib/python2.7/site-packages (from scrapy)Requirement already satisfied: six>=1.5.2 in /usr/lib/python2.7/site-packages (from scrapy)Requirement already satisfied: queuelib in /usr/lib/python2.7/site-packages (from scrapy)Requirement already satisfied: Twisted>=13.1.0 in /usr/lib64/python2.7/site-packages (from scrapy)Requirement already satisfied: PyDispatcher>=2.0.5 in /usr/lib/python2.7/site-packages (from scrapy)Requirement already satisfied: lxml in /usr/lib64/python2.7/site-packages (from scrapy)Requirement already satisfied: w3lib>=1.17.0 in /usr/lib/python2.7/site-packages (from scrapy)Requirement already satisfied: cssselect>=0.9 in /usr/lib/python2.7/site-packages (from scrapy)Requirement already satisfied: service-identity in /usr/lib/python2.7/site-packages (from scrapy)Requirement already satisfied: zope.interface>=3.6.0 in /usr/lib64/python2.7/site-packages (from Twisted>=13.1.0->scrapy)Requirement already satisfied: attrs in /usr/lib/python2.7/site-packages (from service-identity->scrapy)Requirement already satisfied: pyasn1-modules in /usr/lib/python2.7/site-packages (from service-identity->scrapy)Requirement already satisfied: pyasn1 in /usr/lib/python2.7/site-packages (from service-identity->scrapy)Requirement already satisfied: setuptools in /usr/lib/python2.7/site-packages (from zope.interface>=3.6.0->Twisted>=13.1.0->scrapy)

后面执行命令：

sudo pip install twisted==13.1.0
成功了。

如果上面这安装不成功，可试下如下方式下载编译：

wget https://twistedmatrix.com/Releases/Twisted/17.1/Twisted-17.1.0.tar.bz2
tar -jxvf Twisted-17.1.0.tar.bz2
cd Twisted-17.1.0
python setup.py install

参考：https://stackoverflow.com/questions/42731760/attributeerror-module-object-has-no-attribute-op-no-tlsv1-1

https://segmentfault.com/a/1190000009110685

http://bbs.csdn.net/topics/392135227

https://stackoverflow.com/questions/42573038/scrapy-module-object-has-no-attribute-op-single-ecdh-use