How To Download And Run Python On Mac

  

Press Download Python 3.7.4or the version you would like to download. 2) After downloading the installer, open it to install Python 3. Python 3.7.4 installer Read Mecontains the following note about Python 3 and Python 2 Co-existence. Thus, to run Python 3, you can run Python3or Python3.X.X(a specific version that you installed on your machine).

Check out the steps below to install Python 3 on Mac OSX.

How to download Python3

On the version-specific download pages, you should see a link to both the downloadable file and a detached signature file. To verify the authenticity of the. Head to python.org. Click 'Downloads', then download the latest version from there: This downloads the 64-bit version of the latest Python release (3.8.5 as of August 2020). NOTE: If your Mac's OS version is older than 10.9 (year 2013), I recommend upgrading your OS first. If you are unable to, see. Perform these steps to download and install Python, IDLE, Tkinter, NumPy, and PyGame: Browse to the Python for Mac download page. In the resulting page click on the Download Python 3.6.5 button. Your browser will download the file python-3.6.5-macosx10.6.pkg to your Downloads directory.

Python

You can download Python 3 by downloading from official Python website or using Homebrew package manager for macOS .

Python Official Site

1) Open up Python official download site. It looks something like the image below. Press Download Python 3.7.4 or the version you would like to download.

2) After downloading the installer, open it to install Python 3.

Python 3.7.4 installer Read Me contains the following note about Python 3 and Python 2 Co-existence. Thus, to run Python 3, you can run Python3 or Python3.X.X (a specific version that you installed on your machine). To run Python 2, you can run Python or Python2.7.

3) Remove Python installer when you are done installing

4) Run python3 --version to check if Python 3 is installed.

If you install Python 3.7.X, you can also check its version using this command:

Install

Homebrew

Another way to install Python 3 on Mac OS is using Homebrew package manager.

1) If you don’t have Homebrew install, you can install Homebrew by following the steps on Homebrew site. You can also use the following command to install Homebrew by copy and pasting it onto your terminal.

2) To install the latest version of Python 3, run the command below.

If you already have the latest Python installed, you will see something like the message below.

3) Run python3 --version to check if Python 3 is installed.

If you install Python 3.7.X, you can also check its version using this command:

Python 3 Shell

To open Python 3 shell from terminal, you can run Python 3.

To close Python shell, you can type in exit(). The hotkeys to close it is to press Ctrl and D simultaneously.
Note that Command and D splits your Python shell view.

Note that you can still access Python 2 by running python command.

Python 3 Package Manager Pip3

Python 3 comes with its own package manager pip3. You can check out Python Package Index to look for packages that you need.

To install a package using pip, you can run pip3 install package_name.

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Switch between Python 3 Versions

Python Official Site

The easier way is to download multiple versions from Python official website and run Python command with a version appeneded such as python3.7 and python3.6.

Homebrew

If you have previous versions of Python installed, you can run the following commands to check what versions you have and switch the version you need.

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How To Download And Run Python On Mac Os

Python 3 Notes

[ HOME LING 1330/2330 ]

Installing Python 3 on a Mac

<< Previous Note Next Note >>

Steps

  • Head to python.org. Click 'Downloads', then download the latest version from there:

    This downloads the 64-bit version of the latest Python release (3.8.5 as of August 2020).
    • Alternatively, if you start from the release page such as https://www.python.org/downloads/release/python-385/, you should scroll all the way to the bottom and choose 'macOS 64-bit installer', for OS X 10.9 and later. See screenshot here.
    • NOTE: If your Mac's OS version is older than 10.9 (year 2013), I recommend upgrading your OS first. If you are unable to, see this FAQ for how to install Python on an older version of Mac OS.
  • Proceed with installation. If everything goes fine, you should see an IDLE shortcut in your Launchpad.
  • Go ahead and try it out! Video tutorial here.

Should I Re-install?

If you already have a working version of Python on your laptop, you might be wondering if it is OK to keep it or you should re-install. The run-down:
  • Already have Python 3 but older version
    If you previously installed an earlier version of Python 3 (say, 3.3.1 or something), then you should either update it or simply un-install it and then install the newest version of Python 3. That way, you can make sure you are working in the exactly same setup with the rest of the class, which just might save you some headache stemming from a configuration unique to your machine.
  • I have Anaconda Python
    That works too! Make sure to update it to the latest 3.X version. There is one caveat: in LING 1330/2330, we will be using the interpretive shell interface via IDLE rather than Jupyter Notebook you probably have been using. This is how you launch IDLE for Anaconda Python:
    1. Open up a Terminal.
    2. Type in idle3 &, followed by ENTER. ('&' keeps Terminal usable while IDLE window is open.)