ubuntu14.04 源码安装 Python2.7.11

1、在官网下载Python源码

2、把/usr/bin 下的Python，Python2，Python2.7都备份

mv /usr/bin/python /usr/bin/python_bk

3、安装源码

./configure --enable-shared --prefix=usr/local/python2711

sudo make -j2

sudo make install

重新配置请make clean

4、sudo gedit /etc/profile

添加 export PATH="$PATH:/usr/local/python2711/bin"

source /etc/profile

5、建立软连接

ln -sv /usr/local/python2711/bin/python /usr/bin/python

python2, python2.7都这样做