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[Python] - How to install Python 3.2 on a Mac (Keeping 2.X)

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[Python] - How to install Python 3.2 on a Mac (Keeping 2.X)

Post by Alias on Fri Oct 14, 2011 12:44 am

Hi guys,

No one's going to need this anytime soon, but I thought I'd throw it out there. This is a guide on how to install Python 3.2 for Mac, while keeping Python 2.X. (Where X might be 6 or 7 or whatever you have Very Happy)

Firstly, the reason why we're keeping Python 2.X is because I've just heard from here and there that you should keep it, or else bad things can happen. You can always look into it yourself, but yeah.

See what kind of mac you have (32-bit.. 64-bit..)

Downloading the .dmg file based on your operating system version

Open the folder from the .dmg file

Install Python 3.2 from the folder from the .dmg

Confirm that you have installed Python 3.2

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Step One >> See what kind of Mac you have
-Click on the Apple on the top left of the menu bar at the top of your screen
-Go to "About This Mac"
(Right under the Mac OSX in huge letters (you can't miss it) it should tell you what version of the operating system you have.)

Note the version of your operating system, and what the Processor is.
Look at the thingie from apple below to see if your Mac is 32 or 64 bit. Note it.

-According to http://www.Apple.Com: (the below)
Processor Name32- or 64-bit
Intel Core Solo32 bit
Intel Core Duo32 bit
Intel Core 2 Duo64 bit
Intel Quad-Core Xeon64 bit
Dual-Core Intel Xeon64 bit
Quad-Core Intel Xeon64 bit
Core i364 bit
Core i564 bit
Core i764 bit

Step Two >> Download the .dmg file
-Go to
-And scroll down until you see the file named Python 3.2.2 Mac OSX....
==> Make sure you download the one that matches your Processor (32-bit or 64-bit) and your operating system.. (Lion 10.7, Leopard 10.6ish... Or even 10.3 ish.. Whatever.)
-Download the correct file (the blue links are hyperlinks, just click)

Step Three >> Open and Install the file
-Open up the file you just downloaded
(It will either open up, or you can manually go to this folder by opening up the Finder window, and clicking on the side, just like opening up a USB)
-You can save all the files you want to, but the most important one is the Python.mpkg, so open that one up
-Read through the important notes and then Agree and download/install the file
-You can 'eject' the disk now, or close finder

Step Four >> Install Python 3.2
-Open up "Macintosh HD"
-Go to "Applications"
-Scroll down and find "Python 3.2"
-Double click the "Update Shell Profile.command"
-Terminal will open and it will tell you what just happened

Step Five >> Make sure you really have Python 3.2 Installed
-Open up Terminal
-Type in "python" and hit enter on your keyboard
-It will tell you that you still have Python 2.X (It might be slightly different depending on when you got your computer)
(Important: It is crucial that you STILL have Python 2.X. In fact, this is a good thing. Rumours have it that if you try to update it you might mess up your computer.)

-Exit out of python in the terminal by typing in (Ctrl+D)
-Type in "python3" or "python3.2" and hit enter
-It should tell you that you have python 3.2.2 or whatever you have installed.

You have now successfully downloaded Python for Mac and hopefully know how to use it too!

Thanks for reading!

Sorry, it's not that pretty xD I'm too tired to format it because it's late, so I copied and pasted it off an e-mail I sent to someone.

Questions, comments or concerns, post them here.


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