Rounding

[DPaul]

I have developed an app, which does lengthy, but not very complicated calculations.
The main thing is that it produces end results, rounded numbers to 2 decimals.
Works well. (On my PC)

I made an executable with pyinstaller : pyinstaller --onefile --windowed xxx.py,
and gave it to somebody else.

With the identical dataset, his results are the same except for the rounding.
I have eg. : 616.51
His PC produces : 616.5199999999999

Am I naive in thinking that an executable should always produce the exact same result als the source?
How can this be ?
Paul

[Larz60+]

Please see: https://docs.oracle.com/cd/E19957-01/806...dberg.html

[Skaperen]

...or... try the calculations with the decimal.Decimal type. actually, read that document, anyway, first. then read about the decimal.Decimal type.

[DPaul]

wow, all this is not for the faint of heart.
Will try to make some sense of it.
Paul

[Skaperen]

wow, all this is not for the faint of heart.

the same can be said for many other things when you dive deep into programming. get used to it.