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Install IronPython 3 using Winget - wingetCollections
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IronPython 3 .NET Foundation

c-sharp ironpython language programming programming-language python python3 script
Use this command to install IronPython 3:
winget install --id=Microsoft.IronPython.3 -e

IronPython is an open-source implementation of the Python programming language which is tightly integrated with .NET. IronPython can use .NET and Python libraries, and other .NET languages can use Python code just as easily.

IronPython 3 is an open-source implementation of the Python programming language designed to provide seamless integration with the .NET Framework. Built on the Dynamic Language Runtime (DLR), it enables developers to leverage Python's flexibility while accessing the extensive capabilities of the .NET ecosystem.

Key Features:

  • Compatibility with Python 3.x syntax and standard libraries.
  • Tight integration with .NET Framework, allowing access to a wide range of .NET libraries and tools.
  • Performance optimized for dynamic languages through the DLR.
  • Cross-platform support, enabling development on Windows, macOS, and Linux.
  • Ability to extend Python code with C# or other .NET languages.
  • Support for scripting and automation within .NET applications.

Audience & Benefit: Ideal for developers working with .NET Framework who want to utilize Python's simplicity and expressiveness. It is particularly beneficial for those seeking to integrate Python scripts into existing .NET workflows, enabling rapid development, prototyping, and cross-platform compatibility without sacrificing performance or functionality. The software can be installed via winget, ensuring easy setup on supported systems.

README

IronPython 3

There is still much that needs to be done to support Python 3.x. We are working on it, albeit slowly. We welcome all those who would like to help!

Official Website

IronPython is an open-source implementation of the Python programming language that is tightly integrated with .NET. IronPython can use .NET and Python libraries, and other .NET languages can use Python code just as easily.

IronPython 3 targets Python 3, including the re-organized standard library, Unicode strings, and all of the other new features.

What?Where?
Windows/Linux/macOS BuildsBuild status Github build status
DownloadsNuGet Release
HelpGitter chat StackExchange

Examples

The following C# program:

using System.Windows.Forms;

MessageBox.Show("Hello World!", "Greetings", MessageBoxButtons.OKCancel);

can be written in IronPython as follows:

import clr
clr.AddReference("System.Windows.Forms")
from System.Windows.Forms import MessageBox, MessageBoxButtons

MessageBox.Show("Hello World!", "Greetings", MessageBoxButtons.OKCancel)

Here is an example how to call Python code from a C# program.

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Versions
3.4.2.1000
3.4.0.0001
Website
ironpython.net
License
Last Updated
5/15/2025
var eng = IronPython.Hosting.Python.CreateEngine(); var scope = eng.CreateScope(); eng.Execute(@" def greetings(name): return 'Hello ' + name.title() + '!' ", scope); dynamic greetings = scope.GetVariable("greetings"); System.Console.WriteLine(greetings("world"));

This example assumes that IronPython has been added to the C# project as a NuGet package.

Code of Conduct

This project has adopted the code of conduct defined by the Contributor Covenant to clarify expected behavior in our community. For more information see the .NET Foundation Code of Conduct.

State of the Project

The current target is Python 3.4, although features and behaviors from later versions may be included.

See the following lists for features from each version of CPython that have been implemented:

  • What's New In Python 3.0
  • What's New In Python 3.1
  • What's New In Python 3.2
  • What's New In Python 3.3
  • What's New In Python 3.4
  • What's New In Python 3.5
  • What's New In Python 3.6

Contributing

For details on contributing see the Contributing article.

Upgrading from IronPython 2

For details on upgrading from IronPython 2 to 3 see the Upgrading from IronPython 2 to 3 article.

Differences with CPython

While compatibility with CPython is one of our main goals with IronPython 3, there are still some differences that may cause issues. See Differences from CPython for details.

Package compatibility

See the Package compatibility document for information on compatibility with popular packages.

Installation

Binaries of IronPython 3 can be downloaded from the release page, available in various formats: .msi, .zip, .deb, .pkg. The IronPython package is also available on NuGet. See the installation document for detailed instructions on how to install a standalone IronPython interpreter on various operating systems and .NET frameworks.

Build

See the building document. Since the main development is on Windows, bugs on other platforms may inadvertently be introduced - please report them!

Supported Platforms

IronPython 3 targets .NET Framework 4.6.2, .NET Standard 2.0, .NET 6.0 and .NET 8.0. The support for .NET and .NET Core follow the lifecycle defined on .NET and .NET Core Support Policy.

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