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From the Python 3.7 docs (https://docs.python.org/3/library/functions.html#round https://docs.python.org/3/library/functions.html#round): The behavior of round
by EForEndeavour 8y ago
From the Python 3.7 docs (https://docs.python.org/3/library/functions.html#round https://docs.python.org/3/library/functions.html#round):
The behavior of round() for floats can be surprising: for example, round(2.675, 2) gives 2.67 instead of the expected 2.68. This is not a bug: it’s a result of the fact that most decimal fractions can’t be represented exactly as a float.
- zokier 8y agoWell that is just normal float fun :) In [17]: Decimal(2.675) Out[17]: Decimal('2.67499999999999982236431605997495353221893310546875') So sort of round() is working as expected, but the number you are not inputting is not the one you are expecting.