1. Uninstall Python 3.8 Mac

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But keep it in mind that, the regular Python removal way will leave a mess of orphaned app junk on your Mac. Here are the detailed steps that help thoroughly uninstall Python on your Mac (How Uninstall Homebrew Package & Caches on Mac). Step 1: Quit the Python Launcher and IDLE application and kill all running processes of Python in the background. The official home of the Python Programming Language. While Javascript is not essential for this website, your interaction with the content will be limited. In the link above you will not find a formula for a version of Python above 3.6.5. After the maintainers of that (official) repository released Python 3.7, they only submit updates to the recipe of Python 3.7. As explained above, with homebrew you have only Python 2 (python@2) and Python 3 (python), there is no explicit formula for Python 3.6. In this video how to install Python 3.8 in a Mac OS X or MacOS, both macOS Catalina. As the Python website says, 'Python 3.x is the present and future of th. How to remove Python 3.8.2 from Ubuntu 18.04 LTS, without damaging preinstalled versions of Python 2.7 and Python 3.6? Hot Network Questions Make an ASCII table.

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 Python3.9 folder in your Applications folder. In hereyou find IDLE, the development environment that is a standard part of officialPython distributions; and PythonLauncher, which handles double-clicking Pythonscripts from the Finder.

• 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 3.9, 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¶

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.

4.5. Distributing Python Applications on the Mac¶

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¶

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

Another useful resource is the MacPython wiki:

The Pip and Pipenv Package Managers can be used to uninstall Python packages.

Checklist

Before packages can be uninstalled, ensure that a Python installation containing the necessary files needed for uninstalling packages is in place. Installation Requirements (for Windows).

How to Uninstall Packages Installed with Pip

To uninstall a package:

How to Uninstall Packages in a Python Virtual Environment

Packages can be uninstalled from a virtual environment using pip or pipenv.

To use pip to uninstall a package locally in a virtual environment:

1. Open a command or terminal window (depending on the operating system)
2. cd into the project directory
3. pip uninstall <packagename>

To use pipenv to uninstall a package locally in a virtual environment created with venv or virtualenv:

1. Open a command or terminal window (depending on the operating system)
2. cd into the project directory
3. pipenv uninstall <packagename>

How to Globally Uninstall Python Packages

In some cases, packages may be installed both locally (e.g., for use in a specific project) and system-wide. To ensure a package is completely removed from your system after you’ve uninstalled it locally, you’ll also need to uninstall it globally.

To uninstall a package globally in Windows:

1. 1. Open a command window by entering ‘cmd’ in the Search Box of the Task bar
   2. Press Ctrl+Shift+Enter to gain Administration (Admin) privileges
   3. pip uninstall <packagename>

To uninstall a package globally in Linux:

1. 1. Open a terminal window
   2. sudo su pip uninstall <packagename>

How to Uninstall Package Dependencies with Pip

When you install a package with pip, it also installs all of the dependencies the package requires. Unfortunately, pip does not uninstall dependencies when you uninstall the original package. Here are a couple of different procedures that can be used to uninstall dependencies.

1. If a package has been installed via a pip requirements file (i.e., pip install requirements.txt), all of the packages in requirements.txt can be uninstalled with the following command:

2. If a requirements.txt file is not available, you can use the pip show command to output all the requirements of a specified package:

Example:

Output should be similar to:

These dependencies can then be uninstalled with the pip uninstall command. However before uninstalling, you should ensure that the packages are NOT dependencies for other existing packages.

How to Uninstall Package Dependencies with Pipenv

To uninstall all the dependencies in a Pipenv project:

1. Open a command or terminal window
2. cd into the project directory
3. pipenv uninstall --all

How to Uninstall a Package Installed With Setuptools

Any packages that have been configured and installed with setuptools used the following command:

Unfortunately, there is no python setup.py uninstall command. To uninstall a package installed with setup.py, use the pip command:

Be aware that there are a few exceptions that cannot be uninstalled with pip, including:

• Distutils packages, which do not provide metadata indicating which files were installed.
• Script wrappers installed by the setup.py develop command.

Next Steps

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Uninstall Python 3.8 Mac