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12 changes: 12 additions & 0 deletions README.md
Original file line number Diff line number Diff line change
Expand Up @@ -75,6 +75,18 @@ 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.

## Versioning

PyManager uses the two digit year as the first part of the version,
with the second part incrementing for each release.
This is to avoid any sense of features being tied to the version number,
and to avoid any direct association with Python releases.

The two digit year is used because MSI does not support major version fields
over 256. If/when we completely drop the MSI, we could switch to four digit
years, but as long as it exists we have to handle its compatibility constraints.


# Copyright and License Information

Copyright © 2025 Python Software Foundation. All rights reserved.
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