umedoblock added the comment:
last compared results are different.
should be bug or at least think that how to get a same result
about "D(round(df2, 2)) == D(round(ds2, 2))"
>>> from decimal import Decimal as D
>>> f1 = 1.65
>>> s1 = str(f1)
>>> df1 = D(f1)
>>> ds1 = D(s1)
>>> f2 = 2.675
>>> s2 = str(f2)
>>> df2 = D(f2)
>>> ds2 = D(s2)
>>> f1, df1, ds1
(1.65, Decimal('1.649999999999999911182158029987476766109466552734375'),
Decimal('1.65'))
>>> f2, df2, ds2
(2.675, Decimal('2.67499999999999982236431605997495353221893310546875'),
Decimal('2.675'))
>>> D(round(df1, 1)) == D(round(ds1, 1))
True
>>> D(round(df2, 2)) == D(round(ds2, 2))
False
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