Python can be downloaded from http://python.org

For unix platforms download the .tgx file , extract the files and go to the main directory. Build Python by performing the following:

1. ./configure
2. make
3.  make install

Python is usually installed in a standard location so you can find it rather easily. It has become quite common place for systems today to have multiple versions of Python installed. While it is easy to find the binary executable, you also have to deal with where the libraries are installed. 

On unix machines, the excutables is usually installed in /usr/local/bin while the libraries are in /usr/local/lib/python2.x where the 2.x is the version of Python you are using. For MacOS X, Python is installed in /sw/bin/ and or /usr/local/bin, and the libraries are in /sw/lib, /usr/local/lib , and/or /Library/Frameworks/Python.framework/Versions. 

On windows , the default installation is c:\Python2x. Try to avoid installing Python in C:\Program Files. Does does not support those types of long names; as it is usually aliased as Program~`.