Desktop notifications on Windows

[windypower]

I'm looking for a way to implement desktop notifications (much like an
instant messaging program or a mail notifier) within my Python
application, on Windows only (no Gtk/Galago, please). I need no more
than a simple text-based notification, which should be clickable and
have a timeout, nothing else. I do not want to use Windows's "balloon
tips", either. Any suggestions?
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