The latest OS X comes with python 3.3.3 – Rafael Barros Jul 15 '14 at 20:49. (3.3.6) archive. Download the archive locally and compute the checksum with shasum. This way you can brew install python3 like normal – adambullmer Nov 4 '15 at 20:16. Gist link is broken.

Scientific Python distributions For many users, especially on Windows, the easiest way to begin is to download one of these Python distributions, which include all the key packages: •: A free distribution of Python with scientific packages. Supports Linux, Windows and Mac.

•: The free and commercial versions include the core scientific packages. Supports Linux, Windows and Mac. •: A free distribution including scientific packages, based around the. Windows and Ubuntu; Py2 only. •: Another free distribution including scientific packages and the Spyder IDE.

Windows only, but more actively maintained and supports the latest Python 3 versions. •: A free distribution based on Anaconda and the IEP interactive development environment. Supports Linux, Windows and Mac.

I love OS X for day-to-day work, especially compared to its main alternative, Windows. But Apple neglects data monkeys who install tools under the hood. For my research, I use Python, NumPy, SciPy, matplotlib, PyMC, and Basemap/geos, among other modules. These tools used to break with each new version of OS X, although as OS X has matured, the disruptions with each new release have become less. I’ve tested these instruction on OS X 10.8 Mountain Lion, 10.9 Mavericks, 10.10 Yosemite, and 10.11 El Capitan when they were reasonably current (I usually stay about one OS X release behind).

Over the years these instructions have evolved, and Homebrew formulae have been added and improved. I haven’t been going back and re-testing these instructions on older OS X releases, so your mileage might vary if you do this. Consider starting with a clean install of OS X. The dirty upgrade works great if you’re an everyday user who stays on the UI level, but in the distant past it made a terrific mess of my tools installed under the hood. I’ve ended up with multiple MySQL servers and multiple apache servers. But, as OS X has become more mature, I’m noticing less of a need to do this.

If you decide to take my advice and do a clean installation, first make sure that you have a backup. Can i use a gmail address in thunderbird for mac. Time Machine works spectacularly well for this purpose, or you can install onto a new hard drive or carbon copy your old drive. Erase your working hard drive, install OS X, then have Migration Assistant import user accounts and applications from the backup ( but leave the Other Files & Folders box unchecked).

Migration Assistant takes care of restoring ordinary documents, which Apple does well, yet it provides a relatively blank slate under the hood to freshly install tools. If you decide that you don’t want to start with a clean install of OS X, then go through these instructions anyway.

For each package, use brew to uninstall, and then reinstall each package in sequence. Use my directions to keep you on track as you update each package individually. Don’t forget to also test each package after each reinstallation, as I have demonstrated in my instructions, so that if there are problems, you know exactly what the problem is.

Download Xcode from the App store and install the command line tools. Xcode is a dependency for Homebrew, which uses Xcode’s gcc compiler to compile everything from source. Once you have Xcode installed, you need to install the command line tools for the gcc compiler to work. The quickest way to do this is from Terminal: $ xcode-select --install Check the systemwide PATH variable.

Open a Terminal window, and type: $ cat /etc/paths Make sure that /usr/local/bin occurs before /usr/bin. If they don’t, then you need to change this order. Edit /etc/pathsusing vi or your favorite text editor.

I love and use. Close your Terminal window and open a new Terminal window for this change to take effect. Obtain Homebrew. Is a great package manager for OS X that installs everything in /usr/local/binand does not require sudo.It then creates symlinks to the expected locations so that the various tools can find one another.

Because the packages are centralized in the Cellar, they are easily updated and/or removed. $ ruby -e '$(curl -fsSL Fix any problems that Homebrew detects. $ brew update $ brew doctor Follow brew doctor‘s instructions. Brew doctor usually complains about Xcode.

If I’m guessing the error correctly, here is the solution that brew doctor will suggest (assuming OS X 10.10 – note the version since this affects what you will type into Terminal): $ cd /Applications/Xcode.app/Contents/Developer/Toolchains/ $ sudo ln -s XcodeDefault.xctoolchain OSX10.10.xctoolchain # note the version (10.10) and modify accordingly. Run brew doctor again. Continue to follow brew doctor‘s instructions until it tells you that “Your system is ready to brew.” Install Homebrew’s gcc. This step, overlooked in the other blogs I’ve seen, has been required in the past for successfully installing SciPy and PyMC (newer Homebrew formulae may have fixed this problem). Without this, installation has failed with a vague gfortran error. $ brew install gcc Install Homebrew’s Python.