Brew Install Python Version

I want to install the previous version of Python 3 in my macOS using brew. I have used the below command: brew install python. With the above code, I got the latest version of Python but I want to install the previous version of Python 3.6.5. Doing it Right¶. Let’s install a real version of Python. Before installing Python, you’ll need to install GCC. GCC can be obtained by downloading Xcode, the smaller Command Line Tools (must have an Apple account) or the even smaller OSX-GCC-Installer package.

Note

To install a package into your system Python, you have to run sudo pip install. That’s because you’re installing the Python package globally, which is a real problem if another user comes along and wants to install a slightly older version of the package. After Homebrew installs, make sure to add /opt/homebrew/bin to your PATH in /.zshrc. I tried.zshenv but since that gets called before the system PATH is loaded /usr/bin will be in front, and you won't be able to use the Homebrew versions of pre-installed executables like git.

Cryptography and cffi are both shipped as statically linked wheels. This will work for pyenv Python, system Python, homebrew Python, etc. As long as you're on the latest pip you won't even need a compiler. $ pip2 -V # pip pointing to the Homebrew installed Python 2 interpreter $ pip -V # pip pointing to the Homebrew installed Python 3 interpreter (if installed) Virtual Environments ¶ A Virtual Environment (commonly referred to as a ‘virtualenv’) is a tool to keep the dependencies required by different projects in separate places, by creating. For example, to set your path to first use your system Python and Python3 (set to 2.7.9 and 3.4.2 in this example), but also have Python 3.3.6, 3.2, and 2.5 available on your PATH, one would first pyenv install the missing versions, then set pyenv global system 3.3.6 3.2 2.5.

  • Install Git for Windows and Python version 3.6 or higher for Windows. Enable Developer Mode; Enable Long Paths; Note: We have received reports some community members have experienced problems with Python 3.9 where some dependencies (e.g. Cryptography) cannot be properly installed.
  • Once you have Homebrew set up, run the following command to install the latest version of Python: $ brew install python. Homebrew will also install pip for you which you can verify by running the pip3 command. To verify the successful installation of Python 3.x version, run the python3 command and the IDLE should start in your terminal.

Check out our guide for installing Python 3 on OS X.

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. Having saidthat, I would strongly recommend that you install the tools and librariesdescribed in the next section before you start building Python applications forreal-world use. In particular, you should always install Setuptools, as it makesit much easier for you to install and manage other third-party Python libraries.

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 a C compiler. The fastest wayis to install the Xcode Command Line Tools by runningxcode-select--install. You can also download the full version ofXcode from the Mac App Store, or theminimal but unofficialOSX-GCC-Installerpackage.

Note

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 decent 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

Brew Install Python 3

Now, we can install Python 2.7:

Because [email protected] is a “keg”, we need to update our PATH again, to point at our new installation:

Homebrew names the executable python2 so that you can still run the system Python via the executable python.

Setuptools & Pip¶

Homebrew installs Setuptools and pip for you.

Setuptools enables you to download and install any compliant Pythonsoftware over a network (usually the Internet) with a single command(easy_install). It also enables you to add this network installationcapability to your own Python software with very little work.

How To Install Python With Homebrew

Python

pip is a tool for easily installing and managing Python packages,that is recommended over easy_install. It is superior to easy_installin several ways,and is actively maintained.

Brew Install Python Specific Version

Virtual Environments¶

Install

A Virtual Environment (commonly referred to as a ‘virtualenv’) 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.

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

Install Python With Homebrew Vinegar

Brew Install Python Version 3 8 1

To start using this and see more information: Virtual Environments docs.

Install Python With Homebrew

Install Pycharm

This page is a remixed version of another guide,which is available under the same license.