python@3.9 (deprecated)

Disable date: 2026-10-15

Install command: 
brew install python@3.9

Interpreted, interactive, object-oriented programming language

https://un5gmtkzgjcywhd1hkae4.julianrbryant.com/

License: Python-2.0

Development: Pull requests

Formula JSON API: /api/formula/python@3.9.json

Formula code: python@3.9.rb on GitHub

Bottle (binary package) installation support provided for:

macOS on
Apple Silicon		 tahoe ✅
sequoia ✅
sonoma ✅
macOS on
Intel		 sonoma ✅
Linux ARM64 ✅
x86_64 ✅

Current versions:

stable ✅ 3.9.25

Other versions:

python@3.14 3.14.3 Interpreted, interactive, object-oriented programming language
python@3.13 3.13.12 Interpreted, interactive, object-oriented programming language
python@3.12 3.12.13 Interpreted, interactive, object-oriented programming language
python@3.11 3.11.15 Interpreted, interactive, object-oriented programming language
python@3.10 3.10.20 Interpreted, interactive, object-oriented programming language

Depends on:

gdbm 1.26 GNU database manager
mpdecimal 4.0.1 Library for decimal floating point arithmetic
openssl@3 3.6.1 Cryptography and SSL/TLS Toolkit
readline 8.3.3 Library for command-line editing
sqlite 3.51.3 Command-line interface for SQLite
xz 5.8.3 General-purpose data compression with high compression ratio

Depends on when building from source:

pkgconf 2.5.1 Package compiler and linker metadata toolkit
Python is installed as
    $HOMEBREW_PREFIX/bin/python3.9

Unversioned and major-versioned symlinks `python`, `python3`, `python-config`, `python3-config`, `pip`, `pip3`, etc. pointing to
`python3.9`, `python3.9-config`, `pip3.9` etc., respectively, are installed into
    $HOMEBREW_PREFIX/opt/python@3.9/libexec/bin

You can install Python packages with
    pip3.9 install <package>
They will install into the site-package directory
    $HOMEBREW_PREFIX/lib/python3.9/site-packages

`idle3.9` requires tkinter, which is available separately:
    brew install python-tk@3.9

If you do not need a specific version of Python, and always want Homebrew's `python3` in your PATH:
    brew install python3

See: https://un5n6892w35yexfzhkucp.julianrbryant.com/Homebrew-and-Python

Analytics:

Installs (30 days)
python@3.9 9,243
python@3.9 --HEAD 10
Installs on Request (30 days)
python@3.9 8,866
python@3.9 --HEAD 10
Build Errors (30 days)
python@3.9 3
Installs (90 days)
python@3.9 33,634
python@3.9 --HEAD 30
Installs on Request (90 days)
python@3.9 32,280
python@3.9 --HEAD 30
Installs (365 days)
python@3.9 349,671
python@3.9 --HEAD 410
Installs on Request (365 days)
python@3.9 333,129
python@3.9 --HEAD 410