Officially, Python 3.9 and 3.10 are not supported on Windows 7 and Windows Server 2003 R2. Here, you can obtain unofficial Windows installers that bring back support for these older Windows versions.

For each Python version, this repository includes the following.

• 64-bit executable installer (e.g. python-3.9.0-amd64-full.exe)
• 32-bit executable installer (e.g. python-3.9.0-full.exe)
• 64-bit embeddable zip file (e.g. python-3.9.0-embed-amd64.zip)
• 32-bit embeddable zip file (e.g. python-3.9.0-embed-win32.zip)
• 64-bit NuGet package (e.g. python.3.9.0.nupkg)
• 32-bit NuGet package (e.g. pythonx86.3.9.0.nupkg)
• Windows help file (e.g. python390.chm)

For the more technical among you, these installers were built from the source distributions published at https://www.python.org/downloads/source/, with the following modifications.

• Include the file api-ms-win-core-path-l1-1-0.dll in the distribution. This file was obtained from https://github.com/nalexandru/api-ms-win-core-path-HACK and is necessary for Python to run on older Windows versions.
• Create full installers that include debugging symbols and debug binaries without needing to download them.
• Allow the installer to proceed on Windows 7 and Windows Server 2003 R2.
• Fix a few bugs in the build scripts.

The files are provided "as is" without warranty or support of any kind.