The PIL show() method looks for the default viewer. How do I change this to a different viewer (of my choice)?

Tue May 29 20:31:23 EDT 2018

On 2018年5月29日 20:02:22 +0200, Paul St George wrote:
> Is there, somewhere, a list of viewers and their names (for the purposes
> of this script)?

Do you mean a list of programs capable of viewing graphics? Do you think 
there is some sort of central authority that registers the names of all 
such programs? *wink*
You can start here:
https://en.wikipedia.org/wiki/Category:Graphics_software
but that's probably the closest you're going to get.
-- 
Steven D'Aprano
"Ever since I learned about confirmation bias, I've been seeing
it everywhere." -- Jon Ronson