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On Mon, Mar 4, 2019 at 12:41 PM Guido van Rossum <guido@python.org> wrote:
Honestly I would rather withdraw the subtraction operators than reopen the discussion about making dict more like set.
+1 I think the "dicts are like more-featured" sets is a math-geek perspective, and unlikely to make things more clear for the bulk of users. And may make it less clear. We need to be careful -- there are a lot more math geeks on this list than in the general Python coding population. Simply adding "+" is a non-critical nice to have, but it seems unlikely to really confuse anyone. -CHB -- Christopher Barker, PhD Python Language Consulting - Teaching - Scientific Software Development - Desktop GUI and Web Development - wxPython, numpy, scipy, Cython