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Author

Bob Savage <bobsavage@mac.com>

Python on a Macintosh running Mac OS X is in principle very similar to Python onany other Unix platform, but there are a number of additional features such asthe IDE and the Package Manager that are worth pointing out.

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4.1. Getting and Installing MacPython¶

Mac OS X 10.8 comes with Python 2.7 pre-installed by Apple. If you wish, youare invited to install the most recent version of Python 3 from the Pythonwebsite (https://www.python.org). A current “universal binary” build of Python,which runs natively on the Mac’s new Intel and legacy PPC CPU’s, is availablethere.

What you get after installing is a number of things:

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  • A Python3.8 folder in your Applications folder. In hereyou find IDLE, the development environment that is a standard part of officialPython distributions; PythonLauncher, which handles double-clicking Pythonscripts from the Finder; and the “Build Applet” tool, which allows you topackage Python scripts as standalone applications on your system.

  • A framework /Library/Frameworks/Python.framework, which includes thePython executable and libraries. The installer adds this location to your shellpath. To uninstall MacPython, you can simply remove these three things. Asymlink to the Python executable is placed in /usr/local/bin/.

Explore the world of Mac. Check out MacBook Pro, iMac Pro, MacBook Air, iMac, and more. Visit the Apple site to learn, buy, and get support. GETTING STARTED - Mac Download Installation Omnisphere 2 is available for download as an installation option for registered users through the Spectrasonics Techshop. Once you have downloaded Omnisphere 2 via the Download Manager, follow this set of instructions to install it on your Mac system. FFmpeg 3.2.14 'Hypatia' 3.2.14 was released on 2019-05-14. It is the latest stable FFmpeg release from the 3.2 release branch, which was cut from master on 2016-10-26. It includes the following library versions: libavutil 55. 34.100 libavcodec 57. 64.101 libavformat 57. 56.101 libavdevice 57.

The Apple-provided build of Python is installed in/System/Library/Frameworks/Python.framework and /usr/bin/python,respectively. You should never modify or delete these, as they areApple-controlled and are used by Apple- or third-party software. Remember thatif you choose to install a newer Python version from python.org, you will havetwo different but functional Python installations on your computer, so it willbe important that your paths and usages are consistent with what you want to do.

IDLE includes a help menu that allows you to access Python documentation. If youare completely new to Python you should start reading the tutorial introductionin that document.

If you are familiar with Python on other Unix platforms you should read thesection on running Python scripts from the Unix shell.

If your iMovie library is large and you want to free up storage space on your Mac, you can move your iMovie library to an external drive. Before you move an iMovie library, it's a good idea to back up your Mac. Moving your library to an external hard drive doesn’t affect any iMovie Theater content that you have moved to iCloud. Move mac photo library to external drive Mar 18, 2020  If your iMovie library is large and you want to free up storage space on your Mac, you can move your iMovie library to an external drive. Before you move an iMovie library, it's a good idea to back up your Mac. Moving your library to an external hard drive doesn’t affect any iMovie Theater content you have moved to iCloud. They all stay compiled into one 'App' file. Taking advantage of this, we can move all of our hefty apps and support files over to an external drive to free up space on the built-in drive, and in short, speed up your system. Choosing an External Drive. The best external drives for Mac computers are undoubtably G-DRIVE ones. They're reliable.

4.1.1. How to run a Python script¶

Your best way to get started with Python on Mac OS X is through the IDLEintegrated development environment, see section The IDE and use the Help menuwhen the IDE is running.

If you want to run Python scripts from the Terminal window command line or fromthe Finder you first need an editor to create your script. Mac OS X comes with anumber of standard Unix command line editors, vim andemacs among them. If you want a more Mac-like editor,BBEdit or TextWrangler from Bare Bones Software (seehttp://www.barebones.com/products/bbedit/index.html) are good choices, as isTextMate (see https://macromates.com/). Other editors includeGvim (http://macvim-dev.github.io/macvim/) and Aquamacs(http://aquamacs.org/).

To run your script from the Terminal window you must make sure that/usr/local/bin is in your shell search path.

To run your script from the Finder you have two options:

  • Drag it to PythonLauncher

    But rest assured, regardless of your version of OS X, your personal Library folder is right where it’s always been, at the root level of your Home folder. Or maybe a developer asked you to delete a preference file, or grab a log file, while troubleshooting a program. The folder was gone.The disappearing Library folderAt least, that’s how it appears. Whatever the case may have been, up until Lion (OS X 10.7), you simply opened your Home folder to access the Library folder.But after upgrading to Lion, OS X 10.8 Mountain Lion, OS X 10.9 Mavericks, and yes even OS X 10.10 Yosemite, the first time you tried accessing your personal Library folder, you likely found.well, you didn’t find. Perhaps you wanted to tweak something using a tip from Macworld, or elsewhere on the Web. Where is library in mac os sierra.

  • Select PythonLauncher as the default application to open yourscript (or any .py script) through the finder Info window and double-click it.PythonLauncher has various preferences to control how your script islaunched. Option-dragging allows you to change these for one invocation, or useits Preferences menu to change things globally.

4.1.2. Running scripts with a GUI¶

With older versions of Python, there is one Mac OS X quirk that you need to beaware of: programs that talk to the Aqua window manager (in other words,anything that has a GUI) need to be run in a special way. Use pythonwinstead of python to start such scripts.

With Python 3.8, you can use either python or pythonw.

4.1.3. Configuration¶

Python on OS X honors all standard Unix environment variables such asPYTHONPATH, but setting these variables for programs started from theFinder is non-standard as the Finder does not read your .profile or.cshrc at startup. You need to create a file~/.MacOSX/environment.plist. See Apple’s Technical Document QA1067 fordetails.

For more information on installation Python packages in MacPython, see sectionInstalling Additional Python Packages.

4.2. The IDE¶

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MacPython ships with the standard IDLE development environment. A goodintroduction to using IDLE can be found athttp://www.hashcollision.org/hkn/python/idle_intro/index.html.

4.3. Installing Additional Python Packages¶

There are several methods to install additional Python packages:

  • Packages can be installed via the standard Python distutils mode (pythonsetup.pyinstall).

  • Many packages can also be installed via the setuptools extensionor pip wrapper, see https://pip.pypa.io/.

4.4. GUI Programming on the Mac¶

There are several options for building GUI applications on the Mac with Python.

PyObjC is a Python binding to Apple’s Objective-C/Cocoa framework, which isthe foundation of most modern Mac development. Information on PyObjC isavailable from https://pypi.org/project/pyobjc/.

The standard Python GUI toolkit is tkinter, based on the cross-platformTk toolkit (https://www.tcl.tk). An Aqua-native version of Tk is bundled with OSX by Apple, and the latest version can be downloaded and installed fromhttps://www.activestate.com; it can also be built from source.

wxPython is another popular cross-platform GUI toolkit that runs natively onMac OS X. Packages and documentation are available from https://www.wxpython.org.

PyQt is another popular cross-platform GUI toolkit that runs natively on MacOS X. More information can be found athttps://riverbankcomputing.com/software/pyqt/intro.

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4.5. Distributing Python Applications on the Mac¶

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The “Build Applet” tool that is placed in the MacPython 3.6 folder is fine forpackaging small Python scripts on your own machine to run as a standard Macapplication. This tool, however, is not robust enough to distribute Pythonapplications to other users.

The standard tool for deploying standalone Python applications on the Mac ispy2app. More information on installing and using py2app can be foundat http://undefined.org/python/#py2app.

4.6. Other Resources¶

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The MacPython mailing list is an excellent support resource for Python users anddevelopers on the Mac:

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Another useful resource is the MacPython wiki: