[issue41598] Adding support for rounding modes to builtin round

[Raymond Hettinger]

Raymond Hettinger <raymond.hettinger at gmail.com> added the comment:

Like Mark, I'm not convinced this is a good idea.  

Outside of finance calculations which typically already use decimal, the need for it is somewhat rare.  Also, the API doesn't fit neatly with existing the __round__ dunder methods, so the new feature couldn't be made to work with existing classes.

If you want to pursue this, I recommend taking it to python-ideas.

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