Engineering numerical format PEP discussion
keith.brafford at gmail.com
Mon Apr 26 21:12:16 EDT 2010
On Apr 26, 7:56 pm, Mark Dickinson <dicki... at gmail.com> wrote:
> On Apr 26, 6:47 am, Keith <keith.braff... at gmail.com> wrote:
> > From that document it appears that my decimal.Decimal(1234567) example
> > shows that the module has a bug:
> > Doc says:
> > [0,123,3] ===> "123E+3"
> > But Python does:>>> import decimal
> > >>> decimal.Decimal(123000).to_eng_string()
> > '123000'
> That's not a bug. The triple [0,123,3] is Decimal('123e3'), which is
> not the same thing as Decimal('123000'). The former has an exponent
> of 3 (in the language of the specification), while the latter has an
> exponent of 0.
> >>> decimal.Decimal('123e3').to_eng_string()
Thanks, Mark, you're right. It's clear that Decimal.to_eng_string()
doesn't solve the problem that I am trying to solve, which is: take
the Python "float" type, and print it in engineering format.
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