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PyPy is awesome

PyPy is a fast, compliant alternative implementation of the Python language (2.7.3 and 3.2.3).

Visit the download page and get the 32-bit or 64-bit archive, depending on your architecture. I extracted it in the /opt directory and put a symbolic link on it:

jabba@jabba-uplink:/opt$ ls -al | grep pypy
lrwxrwxrwx  1 jabba jabba     8 Aug 15 12:32 pypy -> pypy-2.1
drwxr-xr-x  7 jabba jabba  4096 Jul 31 12:59 pypy-2.1

If you install a newer version, just update the symbolic link.

Put another symbolic link to /usr/bin called pypy that points to /opt/pypy/bin/pypy:

root@jabba-uplink:~# ls -al /usr/bin/pypy
lrwxrwxrwx 1 root root 18 Aug 15 16:39 /usr/bin/pypy -> /opt/pypy/bin/pypy

Try it:

jabba@jabba-uplink:~$ pypy
Python 2.7.3 (480845e6b1dd, Jul 31 2013, 09:57:07)
[PyPy 2.1.0 with GCC 4.6.3] on linux2
Type "help", "copyright", "credits" or "license" for more information.

Install pip for pypy
We also want to use 3rd party libraries with pypy thus we need pip.

$ wget http://python-distribute.org/distribute_setup.py
$ wget https://raw.github.com/pypa/pip/master/contrib/get-pip.py
$ pypy distribute_setup.py
$ pypy get-pip.py

Add the following alias to your ~/.bashrc:

alias pip_pypy='/opt/pypy/bin/pip'

Open a new terminal and you are ready to install 3rd party libraries. Example:

$ pip_pypy install futures    # import concurrent.futures

Tip from here. Getting started here.

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