Installing new version of Python without root

Some time ago I was recommending to use Python virtual environment to install local version of Python packages. However this will not solve the issue of outdated version Python in the server your are working in. Here, pythonbrew may be help for you.

# install pythonbrew to ~/.pythonbrew
curl -kL | bash

# add to ~/.bashrc to automatically activate pythonbrew
[[ -s "$HOME/.pythonbrew/etc/bashrc" ]] && source "$HOME/.pythonbrew/etc/bashrc"

# open new terminal tab (Ctrl+Shift+T) or window (Ctrl+Shift+N)

# install python 2.7.10
pythonbrew install 2.7.10

# and enable the new version
pythonbrew switch 2.7.10

# from now on, you can enjoy the version of your choice and install dependencies
which python
python –version
#Python 2.7.10
which pip

Virtual environment (venv) in Python

Working on the machines with no root access is sometimes annoying, especially if you depend on multiple Python packages and your distro is somehow outdatedā€¦ You may find Python virtual environment (venv) very useful.
First, you need to create venv directory structure (this is done only once):
mkdir -p ~/src/venv
cd ~/src/venv
virtualenv py27

Then you can open new BASH terminal and activate your venv by:
[bash]source ~/src/venv/py27/bin/activate[/bash]

After that, you can install / upgrade any packages using pip / easy_install (even including PIP ) ie.
pip install –upgrade pip
pip install –upgrade scipy

Insipired by python-guide.