The Power of Now

原文地址：http://doc.scrapy.org/en/latest/intro/install.html ##准备工作

1. python 2.7

    python --version
   

2. lxml 安装指南：http://lxml.de/installation.html

    pip install lxml
   

   如果报错：

   make sure the development packages of libxml2 and libxslt are installed

   则先执行：apt-get install libxml2-dev libxslt1-dev python-dev 再重新安装

3. OpenSSL(除了windows，其他系统均已安装)

4. pip或者easy_install

   apt-get install python-pip

##安装Scrapy NOTE : Don’t use the python-scrapy package provided by Ubuntu, they are typically too old and slow to catch up with latest Scrapy. 安装方法：http://doc.scrapy.org/en/latest/intro/install.html#intro-install-platform-notes

1. Import the GPG key used to sign Scrapy packages into APT keyring:

   sudo apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv 627220E7
   

2. Create /etc/apt/sources.list.d/scrapy.list file using the following command:

   echo 'deb http://archive.scrapy.org/ubuntu scrapy main' | sudo tee /etc/apt/sources.list.d/scrapy.list
   

3. Update package lists and install scrapy-VERSION, replace VERSION by a known Scrapy version (i.e.: scrapy-0.22:

   sudo apt-get update && sudo apt-get install scrapy-VERSION