On 01/07/2019 02:10 PM, DL Neil wrote: > Why is that obscure? It makes perfect sense - to those of us who have > used tape/serial storage! Perhaps less-so to [bobble-heads], sorry I > mean people who grew-up with 'bubble memory' (Memory sticks, 'flash > drives', SSDs). In point-of-fact, Python Context Managers Bubble memory, now there is a blast from the past...