Dennis Sweeney <sweeney.dennis...@gmail.com> added the comment:
Thanks for the report, but this is the intended behavior. >From https://docs.python.org/3/library/functions.html#round : """values are rounded to the closest multiple of 10 to the power minus ndigits; if two multiples are equally close, rounding is done toward the even choice (so, for example, both round(0.5) and round(-0.5) are 0, and round(1.5) is 2)""" This is called "round-half-to-even" or "Banker's rounding" (see https://en.wikipedia.org/wiki/Rounding#Round_half_to_even) and it's used to prevent the upward bias that would happen if we always rounded halfway points up. ---------- nosy: +Dennis Sweeney resolution: -> not a bug stage: -> resolved status: open -> closed _______________________________________ Python tracker <rep...@bugs.python.org> <https://bugs.python.org/issue45715> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
