Best way to determine user's screensize?

[Grant Edwards]

On 2020-10-30, flaskee via Python-list <python-list at python.org> wrote:

> In odd screen sizes or multi-monitor situations,
> I make the best guess,

Stop guessing. Let the window manager, and layout algorithm do the
jobs for which they were designed.

> but allow the user to alter things, via preferences.

If you want to remember when a user resizes the application and
re-open with that same geometry, that's OK. Doin't it "via
preferences" is right out.