A unique instance of Python GUI program

[akineko]

On Sep 16, 1:58 am, Tim Golden <m... at timgolden.me.uk> wrote:
> I swear this question's been asked twice this month already.


Thank you very much for many pointers.
I'm awfully sorry for posting something that is already answered in
the past.
I tried to find answers to my problem using "unique instance" as a
keyword.
I guess I should have used "single instance" or "one instance",
instead.
I will try to be more careful before posting.

Thank you.
Aki Niimura