Ubuntu: How do I install Python 3.3?

Ubuntu: How do I install Python 3.3?


Question: I have downloaded Python 3.3 from the official site but no idea how to install
it.
I'm using Ubuntu 12.04

Solutions Sample (Please watch the whole video to see all solutions, in order of how many people found them helpful):

== This solution helped 112 people ==
Python 3.3 has been released on 29 September 2012, several months after Ubuntu
12.04 was released. It is included in Ubuntu 12.10 though as python3.3 package
If you want to install Python 3.3 on Ubuntu version which does not have it in
its repositories, you have the following options:
Use a PPA
There's a PPA containing https://launchpad.net/~fkrull/+archive/deadsnakes
maintained by Felix Krull. See Luper_Rouch's_answer for installation
instructions.
Compile Python from source
This is very easy and allows you to have multiple Python versions without
messing with system python interpreter (which is used by a lot of Ubuntu own
programs). On my dev machine I have literally dozens of different Python
versions from 2.4 to 3.2 living happily in /opt.
we need C compiler and other stuff to compile Python
sudo apt-get install build-essential
SQLite libs need to be installed in order for Python to have SQLite support.
sudo apt-get install libsqlite3-dev
sudo apt-get install sqlite3 # for the command-line client
sudo apt-get install bzip2 libbz2-dev
Download and compile Python:
wget http://www.python.org/ftp/python/3.3.5/Python-3.3.5.tar.xz
tar xJf ./Python-3.3.5.tar.xz
cd ./Python-3.3.5
./configure --prefix=/opt/python3.3
make && sudo make install
Some nice touches to install a py command by creating a symlink:
mkdir ~/bin
ln -s /opt/python3.3/bin/python3.3 ~/bin/py
Alternatively, you can install a bash alias named py instead:
echo 'alias py="/opt/python3.3/bin/python3.3"' ＞＞ .bashrc
And this is it. Now you can have any Python version, even an alpha, or, say, to
have a few copies of Python 3.3 compiled with different settings... not that
many people need that though :)
Use pyenv
There's a software called https://github.com/yyuu/pyenv which may help you to
automate the procedure - what it essentially does is compile Python from
source, installing it in your home directory. Its goal is to help you manage
multiple Python versions.

== This solution helped 1 person ==
Warning: Pythonbrew has been deprecated in favor of pyenv. Updated instructions
are https://askubuntu.com/questions/333109/upgrading-to-python-2-7-5-on-ubuntu-
12-04/333111#333111
Also you can use something like https://github.com/utahta/pythonbrew:
curl -kL http://xrl.us/pythonbrewinstall | bash
echo "[[ -s $HOME/.pythonbrew/etc/bashrc ]] && source $HOME/.pythonbrew/etc/
bashrc" ＞＞ ~/.bashrc
pythonbrew install 3.3
It's quite easy to use, and another benefit, that it's possible to install any
python version you need. Please see their https://github.com/utahta/
pythonbrew#readme for mode details

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