a Python bug report
José María Mateos
chema at rinzewind.org
Tue May 29 21:34:21 EDT 2018
On Wed, May 30, 2018 at 01:07:38AM +0000, Ruifeng Guo wrote:
> Hello,
> We encountered a bug in Python recently, we checked the behavior for Python version 2.7.12, and 3.1.1, both version show the same behavior. Please see below the unexpected behavior in "red text".
Have you tried the round() function, however?
In [1]: round(1000 * 1.017)
Out[1]: 1017.0
This is a floating point precision "issue". int() only gets rid of the
decimals.
In [2]: int(3.9)
Out[2]: 3
Because:
In [3]: 1000 * 1.017
Out[3]: 1016.9999999999999
So there you have it.
Some more reading:
https://stackoverflow.com/questions/43660910/python-difference-between-round-and-int
Cheers,
--
José María (Chema) Mateos
https://rinzewind.org/blog-es || https://rinzewind.org/blog-en
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