1.安装环境
系统：Centos 6.8 python版本：2.7
2.安装步骤
1）python2.6升级到2.7
[root@localhost ~]#rpm -ivh http://mirrors.aliyun.com/epel/6/x86_64/epel-release-6-8.noarch.rpm
[root@localhost ~]#rpm -ivh https://mirrors.tuna.tsinghua.edu.cn/ius/archive/CentOS/6/x86_64/ius-release-1.0-13.ius.centos6.noarch.rpm
[root@localhost ~]#yum install python27 python27-devel python27-pip -y
[root@localhost ~]#mv /usr/bin/python /usr/bin/python2.6.6
[root@localhost ~]#ln -s /usr/bin/python2.7 /usr/bin/python
[root@localhost ~]#mv /usr/bin/pip /usr/bin/pip2.6
[root@localhost ~]#ln -s /usr/bin/pip2.7 /usr/bin/pip
2）解决升级python版本后yum不可用的问题
[root@localhost ~]#vi /usr/bin/yum
将#!/usr/bin/python修改为 #!/usr/bin/python2.6.6
3）安装scrapy
[root@localhost ~]#pip install scrapy
可以看到，安装过程报错。
解决办法如下：
[root@localhost ~]#yum install python-devel gcc gcc-c++ openssl-devel -y
[root@localhost ~]#pip install scrapy
ok，成功啦~~~