一、安裝Python2.7.6

1. 更新CentOS lib庫文件
   

   yum -y update

2. 安裝開發工具包
   

   yum groupinstall -y development

3. 安裝擴展包
   

   yum install -y zlib-dev openssl-devel sqlite-devel bzip2-devel

4. 下載Python2.7.6
   

   wget http://www.python.org/ftp/python/2.7.6/Python-2.7.6.tar.xz

5. 解壓Python2.7.6
   

   tar -xvf Python-2.7.6.tar.xz

6. 進入Python2.7.6目錄
   

   cd Python-2.7.6

7. 編譯安裝Python2.7.6
   

   ./configure

   make && make altinstall

二、解決Yum不支持Python2.7的問題

1. 將老的Python程序進行備份
   

   mv /usr/bin/python /usr/bin/python2.6.6

2. 建立新的Python鏈接
   

   ln -s /usr/local/bin/python2.7 /usr/bin/python

3. 修改/usr/bin/yum文件
   

   vi /usr/bin/yum

   將第一行的 #!/usr/bin/python 改為 #!/usr/bin/python2.6.6

   

三、安裝setuptools 和 pip

1. 下載setuptools
   

   wget --no-check-certificate https://pypi.python.org/packages/source/s/setuptools/setuptools-1.4.2.tar.gz

2. 解壓setuptools
   

   tar -xvf setuptools-1.4.2.tar.gz

3. 進入setuptools目錄
   

   cd setuptools-1.4.2

4. 通過已安裝的Python2.7.6安裝setuptools
   

   python setup.py install

5. 安裝 pip
   

   easy_install pip

6. curl https://raw.github.com/pypa/pip/master/contrib/get-pip.py | python2.7 -

四、安裝libxslt-devel支持lxml

yum install libxslt-devel

五、安裝Scrapy

pip install scrapy