python_round.txt

https://stackoverflow.com/questions/10825926/python-3-x-rounding-behavior

>>> decimal.Decimal('3.5').quantize(decimal.Decimal('1'), rounding=decimal.ROUND_HALF_UP)
Decimal('4')

>>> decimal.Decimal('2.5').quantize(decimal.Decimal('1'), rounding=decimal.ROUND_HALF_EVEN)
Decimal('2')

>>> decimal.Decimal('3.5').quantize(decimal.Decimal('1'), rounding=decimal.ROUND_HALF_DOWN)
Decimal('3')

>>> decimal.Decimal('0.125').quantize(decimal.Decimal('0.00'), rounding=decimal.ROUND_HALF_UP)
Decimal('0.13')

>>> decimal.Decimal('0.135').quantize(decimal.Decimal('0.00'), rounding=decimal.ROUND_HALF_UP)
Decimal('0.14')

>>> decimal.Decimal('0.175').quantize(decimal.Decimal('0.00'), rounding=decimal.ROUND_HALF_UP)
Decimal('0.18')