linux安装更新Python

linux系统自带Python，此处只为更新Python

1. 下载Python包

   wget https://www.python.org/ftp/python/2.7.11/Python-2.7.11.tar.xz
   

2. 编译Python

   ./configure --prefix=/usr/local/python

   make all

   make install

3. 把系统自带的改名不然会有问题

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

4. 刚装的Python做软连接到此处

   ln -s /usr/local/python/bin/python /usr/bin/python
   

5. 查看Python版本

   python -V