Linux安装Python2.7

Linux安装Python2.7
以下例子基于python 2.7.16，其他版本同理。#
1、下载python#
wget https://www.python.org/ftp/python/2.7.16/Python-2.7.16.tgz

2、解压、编译安装（依次执行以下5条命令）#
tar -zxvf Python-2.7.16.tgz

cd Python-2.7.16

./configure --prefix=/usr/local/python-2.7.16

make

make install

make install 遇到问题

Creating directory /usr/local/python-2.7.16/bin
/usr/bin/install: cannot create directory ‘/usr/local/python-2.7.16’: Permission denied
Creating directory /usr/local/python-2.7.16/lib
/usr/bin/install: cannot create directory ‘/usr/local/python-2.7.16’: Permission denied
Makefile:1012: recipe for target 'altbininstall' failed
make: *** [altbininstall] Error 1

解决方法

sudo make install

3、系统自带了python版本，我们需要为新安装的版本添加一个软链#
ln -s /usr/local/python-2.7.16/bin/python /usr/bin/python2.7.16

4、若需使用该版本，只需输入"python2.7.16 + 空格 + py脚本"#
python2.7.16 ~/helloworld.py

【可选】#
假若想用python运行脚本，而不是python2.7.16，运行以下指令即可完成修改：

ln -s /usr/local/python-2.7.16/bin/python /usr/bin/python

转自：http://www.cnblogs.com/ich1990/p/3779608.html
https://www.cnblogs.com/toulanboy/articles/7753502.html