Safely renaming a file without overwriting

[Wolfgang Draxinger]

Steven D'Aprano wrote:

> But the source file always exists, otherwise there is nothing
> to rename! Do you mean, open the destination filename?

Of course I meant the destination file. Someone please spill some
ice chilled water over me to get me awake again. Time to go to
bed :-P before I make more dumb mistakes/typos...

Wolfgang Draxinger
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