Mac Python Library Path

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To make sure the path above points to where Homebrew installed Python in our environment, we can run brew info python and look for the path information. This method, of using Homebrew to manage our Python environment, is a good starting place, and it made.

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How does python find packages? Python imports work by searching the directories listed in sys.path. Using my default Ubuntu 14.04 Python. For extension modules loaded dynamically from a shared library, it is the pathname of the shared library file.
Oct 07, 2016 The Python Imaging Library or PIL allowed you to do image processing in Python. The original author, Fredrik Lundh, wrote one of my favorite Python blogs when I first started learning Python. However PIL’s last release was way back in 2009 and the blog also stopped getting updated. Fortunately, there were some other Python folks Continue reading An Intro to the Python Imaging Library.
The Python Standard Library. Source code: Lib/macpath.py. This module is the Mac OS 9 (and earlier) implementation of the os.path module. It can be used to.
Jan 31, 2018 Python’s os.path module has lots of tools for working around these kinds of operating system-specific file system issues. You can use os.path.join to build a path string using the right kind of.
This module is the Mac OS 9 (and earlier) implementation of the os.path module. It can be used to manipulate old-style Macintosh pathnames on Mac OS X (or any other platform). The following functions are available in this module: normcase, normpath, isabs, join, split, isdir, isfile, walk, exists.
Aug 15, 2008 On the Mac a dynamic library (dylib) has an 'install name'. The install name is a path baked into the dynamic library that says where to find the library at runtime. When you link against the dylib this path is saved in your binary so that your binary can find the dylib at runtime. Seems a bit backwards to me - but that's how it works.

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.

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:

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/.

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.

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
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.

2012-7-23 How do you unhide in a Time Machine File? Find the Bookmarks.plist file and go back in time until you get to where you think it was still good. You can QuickLook the file, but it is in xml and may not be easy to figure out if the missing bookmarks are there. Question: Q: How To Unhide the Library Folder in Mac OS X Lion More Less. 2020-4-4 In this Tip's N Tricks article, I want to point out a very important tip for getting around one of Apple's more peculiar security precautions in Mac OS X Lion and Mountain Lion. By default, the User Library folder is hidden in Mac OS 10.7 and above. We'll cover a few different methods to easily access this hidden folder. 2020-1-22 I want to restore the hidden user Library folder from Time Machine but I am unable to see it when I enter Time Machine. I thought the hidden Library folder would appear if I used the Terminal command to either reveal the hidden Library folder AND/OR to show all hidden files and folders. Both commands work outside of Time Machine but they don't show any hidden files or folders when I.

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

4.2. The IDE¶

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/.
About OverDrive for MacOverDrive for Mac is available for macOS versions 10.6 (Snow Leopard) through 10.14 (Mojave). Ebook library software for mac software.

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.

Windows Python Path

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.