[Python-Dev] Sort out formatting differences in decimal and float

skip at pobox.com skip at pobox.com
Sat Dec 5 14:18:37 CET 2009

Sorry for being a curmudgeon, however...

    >>> format(Decimal(1234), '020,g')
    >>> format(Decimal(1234), '0=20,g')

Why in the world would you ever want to insert commas as separators and not
use them consistently?

    >>> format(Decimal('nan'), '020,g')
    '                 NaN'
    >>> format(Decimal('nan'), '0=20,g')

Why in the world would you ever want to zero pad Nan (or Inf, for that matter)?

    Stefan> The advantage of decimal is that the user has the option to
    Stefan> suppress commas. The behaviour of float is slightly easier to
    Stefan> implement in C.

Why?  If the user asked for them why would you want to suppress (some of)


More information about the Python-Dev mailing list