Help wth web page question

[pberrett]

Thanks

With respect to your solution, I don't want any user input from a keyboard or elsewhere. basically what is happening is this. I have a small radio receiving device that is receiving the frequency of a radio station periodically sent from another microcontroller. This frequency will be put in a variable 'A'.
The program takes the frequency in A and loads a webpage showing radio stations on that frequency. The frequency is part of the url.

So what I need to do is load the webpage and periodically check the variable A. When A changes then the web page needs to be closed down and a new web page loaded.

I can load the webpage using

import webbrowser

webbrowser.open(A)

but I need a quick and simple way to close it down to I can load another web page.

cheers Peter

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Thanks