Thanks for the advice, semidieu. I know what you mean, but I don't know enough about Python coding to do it myself.

I could probably find bits and pieces from other scripts to tack together, but I wouldn't know how to write them myself.

"If I were a shadow, I know I wouldn't like to be half of what I should be."
Mr Otsuka, the old black tomcat in Kafka on the Shore (Haruki Murakami)