ubuntu安装SCrapy

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依次安装

sudo apt-get install build-essential;
sudo apt-get install python-dev;
sudo apt-get install libxml2-dev;
sudo apt-get install libxslt1-dev;
sudo apt-get install python-setuptools;

然后安装Scrapy：

sudo easy_install Scrapy;

解决方法：安装libffi：

yum install -y libffi-devel

或

apt-get install -y libffi-dev  ( ubuntu中 )