I am using Ubuntu 10.10 which comes by default installed with Python 2.6, however some applications that I want to use require 2.7 and I want to update.
How would I go about doing this?
It is already in the official repositories: http://packages.ubuntu.com/maverick/python2.7
sudo apt-get install python2.7
You then execute python2.7
P.S. Support for ubuntu 10.10 ends in April 2012: https://wiki.ubuntu.com/Releases
The Deadsnakes PPA is helpful for old and new versions of Python.
Lucid through Precise is supported with versions 2.x and 3.x available. Since you are looking for 10.10, the direct link is:
https://launchpad.net/~fkrull/+archive/deadsnakes?field.series_filter=maverick
Update Ubuntu 10.10 sources (credit).
Because 10.10 is no longer supported.
sudo sed -i -e 's/archive.ubuntu.com\|security.ubuntu.com/old-releases.ubuntu.com/g' /etc/apt/sources.list
sudo apt-get update
Install add-apt-repository command (credit):
This stops you from getting the sudo: add-apt-repository: command not found error in the next step.
sudo apt-get install python-software-properties
Install Deadsnakes PPA (credit):
sudo add-apt-repository ppa:fkrull/deadsnakes
sudo apt-get update
Install Python 2.7:
sudo apt-get install python2.7
Profit!
$ python2.7 --version
Python 2.7.4
sudo apt-get install python3.3
Same goes for python 2.4, 2.5, 3.1, 3.2, etc.