For those of you who are anything like me, you’re debating buying the textbook, or are borrowing an older version of the text book. If so, you will not have the CD required to install python. Have no fear, though! Here are some instructions.
First, you will need to get a copy of Python 2.5. Python is currently at 3.1.1, but for the purpose of this course we are using version 2.5 (which I believe is what is on the school versions). To get this, go here, and download the file “python-2.5.4-macosx.dmg” that is for MacOS X 10.3 and later. Once downloaded, you should be able to open a directory called “Universal MacPython 2.5.4″ and inside of it you will see a file called “MacPython.mpkg”. Run this program to install python in OS X. Python, by default, will be installed into your Applications directory in a folder called “MacPython.” Inside of this folder is a python interpreter, and IDLE.

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