Software Collections:Python

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Installing and running Python via Software collections

Software Collections has been introduced by Redhat as a safe way to run selective applications on Redhat based distributions in an isolated environment (separate directory), thus not effecting the base installation of the OS. This provides the possibility to e.g. test an application, install a higher version then the version installed by the base system (e.g. PHP), or temporarily use an application.

Software Collections applications can be started at boot as a system service, manually or in a specific shell.

Python

Installation

To be able to install an application from the Software Collections, one must install software collections first. Please see Software collections on how to install this.

Required repository

After installing Software Collections, the scl repository for Python has to be added to the yum repositories. Please see here on how the enable the scl-python33 repository.

Install application

After installing the scl-python33 repository, Python can be installed by issuing the following command:

yum install python33 --enablrepo=scl-python33

Once installed, the application is installed on your SME Server at /opt/rh/python33- as an isolated environment for the application.

Test installed application

Once Python has been installed, you can check if it is correctly installed by issuing:

scl -l

which will provide you a listing of all applications that are available on your system installed via Software Collections.

A simple man page about the installed application is now available via:

scl enable python33 'man python33'

press 'q' to leave the man page

Usage

	Note:
	More examples to follow

To make use of Python version 3.3.2 in the current shell environment, one needs to enter the following command:

scl enable python33 bash

and test with:

python --version

	Note:
	How to enable Python at boot time, adding scl enable python33 bash to /etc/rc.d/rc.local file will not work (Error no job control)

• Test:

echo ". /opt/rh/python33/enable" >> /root/.bash_profile

Surely there must be a better 'SME Server' way to have Python invoked at boot time.

Other articles in this category

Mysql57, PHP Software Collections, Software Collections, Software Collections Repositories, Software Collections:MariaDB, Software Collections:MongoDB, Software Collections:MySQL, Software Collections:MySQL55, Software Collections:Nodejs, Software Collections:PHP, Software Collections:PostgreSQL, Software Collections:Python, Software Collections:Ruby on Rails