Python Homebrew

admin



Question or issue on macOS:

I have been reading a lot of the tutorials around the web and answers on the site about using Homebrew. When it comes to Python though, the advice leaves me with more questions than answers.

  • Python 2.x is the legacy version, and Python 3.x is the present and future of Python, but some of the less disruptive improvements in 3.0 and 3.1 have been backported to 2.6 and 2.7, respectively. Regarding the materials available to learn about Data Science and Machine Learning you need the ability to switch between those Python versions,.
  • Confusingly, there are multiple tools for virtual environments in Python: venv is available by default on Python 3.3+ virtualenv must be installed separately but supports Python 2.7+ and Python 3.3+ Pipenv is a higher-level tool that automatically manages a separate virtual environment for each project; On MacOS we can install Pipenv with Homebrew.
  • Homebrew’s Python is not for you. It exists to serve Homebrew, or more accurately, Homebrew’s other formulae. The primary purpose of Homebrew’s Python formula is to enable other Python-dependent Homebrew packages to work. If installing Homebrew’s Python allows you to run the occasional Python script or access the REPL.

I understand the how, but none of the answers I have seen so far have really explained the why behind using Homebrew to install Python and what the benefits are to installing Python with Homebrew as opposed to using OS-X installers provided by the Python Foundation?

Ruby Gems, Python Eggs and Perl Modules; Python; How To Build Software Outside Homebrew With Homebrew kegonly dependencies; Xcode. Creating a Homebrew Issue; Updating Software in Homebrew; Adding Software to Homebrew. Kickstarter Supporters; Contributors. How To Open A Pull Request (and get it merged) Formula Cookbook; Acceptable Formulae. Install Python from python.org, Homebrew, or your Linux package manager. Use Poetry as the most well-maintained tool that provides a dependency resolver and environment management capabilities in a similar fashion as conda does. Python package management. Managing packages is a challenging problem, and, as a result, there are lots of tools.

The newest versions of the installers from Python and the current implementation of PIP seem to be working pretty well, so I would really appreciate any input on my question. Paltalk express download mac. I have worked with Python for a while but from more of a tactical, one off problem solving perspective and I am brand new to tools like Brew and version control software such as Git. I am trying to get up the learning curve. Finding an answer to why I would choose to go with a Homebrew install over just heading over to python.org and downloading from them and then using pip to install packages might help me to understand the benefits of a tool like Homebrew.

So I guess, what does Homebrew give me that going through the installation put in place by TPF does not?

Are there advantages/disadvantages to where Homebrew installs Python and Python packages over the /Library/Frameworks/ and the site-packages folder within that framework?

Though this last question is too broad and likely out of scope, if anyone would also address or provide a link to a good answer on what the benefits are of using Homebrew in general, I’d appreciate it?

Thank you,

How to solve this problem?

Solution no. 1:

The big advantage of using a package manager like Homebrew is it makes it easier to keep your Python installation up to date. If you download Python from the website, then to update it means you’ll need to go back to the website and download a new copy of Python (or whatever it is that you need to update that could have been installed with Homebrew).

Also, when downloading installers, I find they tend to clutter up my downloads folder and require me to periodically clean up unused files. I’d rather spend my time coding instead of managing my disk space usage.

When it comes to updating any package with Homebrew, the command is simple:

And this will update all outdated packages that you installed with Brew.

Now, this isn’t something unique to Homebrew. Macports, PIP, npm, Maven, and other package management tools are also able to manage the versions of modules or tools you install.

For more information, see Safari Books Online – Keeping Your Homebrew Up To Date.

Solution no. 2:

A few reasons not to use system python on OS X from this post,

Apple doesn’t always do a good job on keeping the Python runtime environment up to date,
it can be cumbersome to play with permissions just to install third-party Python libraries,
finally, Apple has a tendency to wipe-out your site-packages with every major OS upgrade.

The use of an independent package manager for Python modules, such as Homebrew, conda, Macports, ets. is thus preferred.

Hope this helps!

Python Homebrew Anaconda

Mac OS X comes with Python 2.7 out of the box.

You do not need to install or configure anything else to use Python 2. Theseinstructions document the installation of Python 3.

The version of Python that ships with OS X is great for learning, but it’s notgood for development. The version shipped with OS X may be out of date from theofficial current Python release,which is considered the stable production version.

Doing it Right¶

Let’s install a real version of Python.

Before installing Python, you’ll need to install GCC. GCC can be obtainedby downloading Xcode, the smallerCommand Line Tools (must have anApple account) or the even smaller OSX-GCC-Installerpackage.

Note

Python homebrew vs anaconda

Python Homebrew

If you already have Xcode installed, do not install OSX-GCC-Installer.In combination, the software can cause issues that are difficult todiagnose.

Note

If you perform a fresh install of Xcode, you will also need to add thecommandline tools by running xcode-select--install on the terminal.

While OS X comes with a large number of Unix utilities, those familiar withLinux systems will notice one key component missing: a package manager.Homebrew fills this void.

To install Homebrew, open Terminal oryour favorite OS X terminal emulator and run

The script will explain what changes it will make and prompt you before theinstallation begins.Once you’ve installed Homebrew, insert the Homebrew directory at the topof your PATH environment variable. You can do this by adding the followingline at the bottom of your ~/.profile file

If you have OS X 10.12 (Sierra) or older use this line instead

Now, we can install Python 3:

This will take a minute or two.

Pip¶

Homebrew installs pip pointing to the Homebrew’d Python 3 for you.

Working with Python 3¶

At this point, you have the system Python 2.7 available, potentially theHomebrew version of Python 2 installed, and the Homebrewversion of Python 3 as well.

Python Homebrew 3.8

will launch the Homebrew-installed Python 3 interpreter.

Python Homebrew Path

will launch the Homebrew-installed Python 2 interpreter (if any).

Python Homebrew Download

will launch the Homebrew-installed Python 3 interpreter.

If the Homebrew version of Python 2 is installed then pip2 will point to Python 2.If the Homebrew version of Python 3 is installed then pip will point to Python 3.

The rest of the guide will assume that python references Python 3.

Pipenv & Virtual Environments¶

The next step is to install Pipenv, so you can install dependencies and manage virtual environments.

A Virtual Environment is a tool to keep the dependencies required by different projectsin separate places, by creating virtual Python environments for them. It solves the“Project X depends on version 1.x but, Project Y needs 4.x” dilemma, and keepsyour global site-packages directory clean and manageable.

Update Python Homebrew

For example, you can work on a project which requires Django 1.10 while alsomaintaining a project which requires Django 1.8.

So, onward! To the Pipenv & Virtual Environments docs!

This page is a remixed version of another guide,which is available under the same license. Max payne 1 mac download.