Installing any or multiple versions of Python on Ubuntu is simple.
First of all install some dependencies:
sudo apt-get install build-essential
sudo apt-get install libreadline5-dev libncursesw5 libssl-dev libsqlite3-dev tk-dev libgdbm-dev libc6-dev libc6-dev libbz2-de
Download: ::
cd Downloads
wget http://python.org/ftp/python/2.7.3/[Python](/blog/87/)-2.7.3.tgz
Extract and change directory to: ::
tar -xzf [Python](/blog/87/)-2.7.3.tgz && cd [Python](/blog/87/)-2.7.3
Install via building: ::
./configure
make
sudo make install # This will make it to the default installation, use `altinstall` instead to keep the default if desired.