更新yum
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								1 
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[root@localhost ~]# yum -y update
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安装gcc及扩展包
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								1 
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[root@localhost ~]# yum install gcc libffi-devel python-devel openssl-devel
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安装开发工具包
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								1 
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[root@localhost ~]# yum groupinstall -y development
 | 
安装libxslt-devel支持lxml
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								1 
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[root@localhost ~]# yum install libxslt-devel
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安装pip
| 
 
								1 
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[root@localhost ~]# yum -y install python-pip
 | 
安装Scrapy
| 
 
								1 
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[root@localhost ~]# pip install scrapy
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