---
id: pyobjc-core
version: "12.2.2"
license: MIT
license_treatment: permissive
maintenance: active
---

# pyobjc-core — Python<->ObjC Interoperability Module

License: permissive · Maintenance: active · Downloads: 3.3M/mo

## What it is and what it does

PyObjC-core is the low-level bridge that connects Python to Objective-C on macOS. It handles the translation layer between Python's object model and Objective-C's runtime, allowing you to instantiate Objective-C classes, call methods, and access properties directly from Python code. This is the foundation package; most users will also install framework-specific bindings to access actual macOS APIs.

The package is actively maintained, supports modern Python versions from 3.10 through 3.15 including free-threading variants, and carries no known vulnerabilities. It's a production-stable tool for developers building native macOS applications in Python or integrating Python with existing Objective-C codebases. The medium install friction reflects that it's platform-specific and requires compiled wheels, but those are readily available.

Use it for:

- Write full Cocoa desktop applications in pure Python with access to native macOS UI frameworks.
- Call Objective-C APIs and third-party frameworks from Python scripts running on macOS.
- Embed Python logic into Objective-C applications by bridging between the two languages.
- Prototype or automate macOS system tasks using Python with direct access to native APIs.
- Inspect and interact with Objective-C classes from the Python interactive interpreter.

## Worth the install?

AI-flagged interpretation of the facts above — verify before relying.

PyObjC-core provides the foundational bridge layer that lets Python code call Objective-C APIs and frameworks on macOS, enabling direct interoperability with native libraries.

Yes, if you are developing on macOS and need to call Objective-C frameworks or build native applications in Python. The active maintenance, permissive license, and lack of known vulnerabilities make it a solid choice. Not applicable on non-macOS platforms; installation will fail outside macOS.

## Install

pip install pyobjc-core
uv add pyobjc-core
poetry add pyobjc-core

## Installing pyobjc-core

Before you install: Medium install friction due to platform-specific wheels (macOS only, multiple Python versions and architectures). Active maintenance with a recent release (3 days old) and steady repository activity suggest reliable upkeep.

License in practice: MIT license is permissive; you can use this in commercial or proprietary projects with minimal restrictions, provided you include the license notice.

Quickstart:

pip install pyobjc-core

import pyobjc_core

macOS only; requires Python 3.10 or later. Installation will fail on non-macOS systems.

Verify before relying:

- Whether pre-built wheels cover all intended Python versions and architectures on your target macOS versions.
- Performance characteristics when bridging frequent calls between Python and Objective-C code paths.
- Specific Objective-C classes and methods accessible through the bridge after installation.

## Package facts

- License: MIT (permissive)
- Python support: supports_current
- Install friction: medium
- Maintenance: active
- Downloads: 3.3M/month (top 5,000 on PyPI)
- Known vulnerabilities: none known

## Tags

python objective-c bridge, cocoa from python, macos native api python, objective-c interop, python objc binding, macos framework access, cocoa application python, macos-native, language-bridge, cocoa

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