411 REFERENCE · Wikibooks
An Introduction to Python For Undergraduate Engineers/Installing Python
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Python can be downloaded from the official Python website:
http://www.python.org/
If you are running Microsoft™ Windows™ then you can download a simple installation file from the downloads section of the official Python website and run that. If you are using a Linux distribution (such as Ubuntu, Debian, Red Hat etc.) you will most probably already have python installed.