"Frank Millman" wrote in message news:...
"Frank Millman" wrote in message news:pm3l2m$kv4$1...@blaine.gmane.org...
I know about this gotcha -
>>> x = 1.1 + 2.2
>>> x
3.3000000000000003
[...]
I have enjoyed the discussion, and I have learnt a lot about floating point.
Thanks to all.
I have just noticed one oddity which I thought worth a mention.
from decimal import Decimal as D
f"{D('1.1')+D('2.2'):.60f}"
'3.300000000000000000000000000000000000000000000000000000000000'
'{:.60f}'.format(D('1.1') + D('2.2'))
'3.300000000000000000000000000000000000000000000000000000000000'
'%.60f' % (D('1.1') + D('2.2'))
'3.299999999999999822364316059974953532218933105468750000000000'
The first two format methods behave as expected. The old-style '%' operator
does not.
Frank
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