Linux_Python2_Python3 并存安装笔记

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环境：Vmware Workstation 10，CentOS-7-x86_64-DVD-1511.iso，Xshell 4.0，ip：192.168.216.140.

[root@localhost ~]# wget https://www.python.org/ftp/python/3.6.3/Python-3.6.3.tgz

[root@localhost ~]# tar -zxvf Python-3.6.3.tgz -C /usr/local/

[root@localhost ~]# mv /usr/local/Python-3.6.3/ /usr/local/python3

[root@localhost ~]# cd /usr/local/python3/

[root@topscience python3]# yum list gcc zlib zlib-devel

Loaded plugins: fastestmirror
Loading mirror speeds from cached hostfile
Installed Packages
gcc.x86_64 4.8.5-16.el7 @base
zlib.x86_64 1.2.7-17.el7 @anaconda
zlib-devel.x86_64 1.2.7-17.el7 @base

[root@localhost python3]# ./configure

[root@localhost python3]# make && make install

Installing collected packages: setuptools, pip
Successfully installed pip-9.0.1 setuptools-28.8.0

[root@localhost python3]# which python

/usr/bin/python

[root@localhost python3]# python

Python 2.7.5 (default, Nov 6 2016, 00:28:07)
[GCC 4.8.5 20150623 (Red Hat 4.8.5-11)] on linux2

[root@localhost python3]# which python3

/usr/local/bin/python3

[root@localhost python3]# python3

Python 3.6.3 (default, Dec 4 2017, 16:38:50)
[GCC 4.8.5 20150623 (Red Hat 4.8.5-16)] on linux

Python脚本

#!/usr/local/bin/python3# -*- coding:utf-8 -*-import osos.system("echo 'hello world'")print(os.popen("echo '你好'").read().strip())

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