On 14/11/2023 00:33, Mats Wichmann via Python-list wrote: > Hardware and software people may have somewhat different views of xor
I've come at it from both sides. I started life as a telecomms technician and we learned about xor in the context of switching and relays and xor was a wiring configuration for scenarios where you wanted any single change of switch state to toggle the entire system (think a stairwell with switches on every landing). Later, I got into software engineering and we studied Boolean algebra and xor was an odd number of Truth values, used in parity tests (and in encryption). But from both perspectives xor is pretty clearly defined in how it operates and not, I suspect, what the OP really wants in this case. -- Alan G Author of the Learn to Program web site http://www.alan-g.me.uk/ http://www.amazon.com/author/alan_gauld Follow my photo-blog on Flickr at: http://www.flickr.com/photos/alangauldphotos -- https://mail.python.org/mailman/listinfo/python-list
