Centos7 python3安装

[root@m201 scripts]# python -V
Python 2.7.5

[root@m201 bin]# ll *python*
-rwxr-xr-x 1 root root 11312 Apr 27 22:53 abrt-action-analyze-python
lrwxrwxrwx 1 root root     7 Sep 11 08:37 python -> python2
lrwxrwxrwx 1 root root     9 Sep 11 08:37 python2 -> python2.7
-rwxr-xr-x 1 root root  7216 Jul 13 21:07 python2.7
-rwxr-xr-x 1 root root  1835 Jul 13 21:07 python2.7-config
lrwxrwxrwx 1 root root    16 Sep 11 08:37 python2-config -> python2.7-config
lrwxrwxrwx 1 root root    14 Sep 11 08:37 python-config -> python2-config

[root@m201 bin]# python2 -V
Python 2.7.5

yum install zlib-devel bzip2-devel openssl-devel ncurses-devel sqlite-devel readline-devel tk-devel gcc make

wget https://www.python.org/ftp/python/3.6.2/Python-3.6.2.tar.xz

tar -xvJf  Python-3.6.2.tar.xz
cd Python-3.6.2
./configure prefix=/usr/local/python3
make && make install

ln -s /usr/local/python3/bin/python3 /usr/bin/python3

[root@s193 Python-3.6.2]# python -V
Python 3.6.2
[root@s193 Python-3.6.2]# python2 -V
Python 2.7.5
[root@s202 Python-3.6.2]# python3 -V
Python 3.6.2