This is the source code for the Python Install Manager app.
For information about how to use the Python install manager, including troubleshooting steps, please refer to the documentation at docs.python.org/using/windows.
The original PEP leading to this tool was PEP 773.
To build and run locally requires pymsbuild
and a Visual Studio installation that includes the C/C++ compilers.
> python -m pip install pymsbuild
> python -m pymsbuild
> python-manager\py.exe ...
Any modification to a source file requires rebuilding.
The .py files are packaged into an extension module.
However, see the following section on tests, as test runs do not require a full
build.
For additional output, set %PYMANAGER_DEBUG% to force debug-level output.
This is the equivalent of passing -vv, though it also works for contexts that
do not accept options (such as launching a runtime).
To run the test suite locally:
> python -m pip install pymsbuild pytest
> python -m pymsbuild -c _msbuild_test.py
> python -m pytest
This builds the native components separately so that you can quickly iterate on
the Python code. Any updates to the C++ files will require running the
pymsbuild step again.
To produce an (almost) installer app package:
> python -m pip install pymsbuild
> python make-all.py
This will rebuild the project and produce MSIX, APPXSYM and MSI packages.
You will need to sign the MSIX package before you can install it. This can be a
self-signed certificate, but it must be added to your Trusted Publishers.
Alternatively, rename the file to .zip and extract it to a directory, and
run Add-AppxPackage -Register <path to dir>\appxmanifest.xml to do a
development install. This should add the global aliases and allow you to test
as if it was properly installed.
Contributions are welcome under all the same conditions as for CPython.
As this project is currently considered to be in prerelease stage, the release schedule is "as needed".
The release manager for the Python Install Manager on Windows is whoever is the build manager for Windows for CPython.
Copyright © 2025 Python Software Foundation. All rights reserved.
See the LICENSE <https://github.com/python/pymanager/blob/main/LICENSE>_ for
information on the history of this software, terms & conditions for usage, and a
DISCLAIMER OF ALL WARRANTIES.
All trademarks referenced herein are property of their respective holders.