Install Python 3.42016/07/07

	The version of Python in CentOS 7 repository is 2.7 but Install 3.4 with RPM package if you need.
[1]	It's possible to install from CentOS SCLo Software Collections. It's OK to install it even if 2.7 is already installed because 3.4 is located on another PATH.

# install from SCLo

[root@dlp ~]#

yum --enablerepo=centos-sclo-rh -y install rh-python34

[2]	Packages from Software Collections are installed uder the /opt directory. To use it, Load environment variables like follows.

# load environment variables

[root@dlp ~]#

scl enable rh-python34 bash

[root@dlp ~]#

python -V

Python 3.4.2

[root@dlp ~]#

which python

/opt/rh/rh-python34/root/usr/bin/python

[3]	If you'd like to enable 3.4 automatically at login time, configure like follows.

[root@dlp ~]#

vi /etc/profile.d/python34.sh

# create new

#!/bin/bash

source /opt/rh/rh-python34/enable
export X_SCLS="`scl enable rh-python34 'echo $X_SCLS'`"

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