[Python-ideas] Programming recommendations (PEP 8) and boolean values
ben+python at benfinney.id.au
Thu Aug 9 05:15:38 CEST 2012
Oleg Broytman <phd at phdru.name> writes:
> On Thu, Aug 09, 2012 at 02:18:53AM +1000, Ben Finney <ben+python at benfinney.id.au> wrote:
> > What is a compelling use case for checking precisely for True or False?
> To distinguish False and None for a tri-state variable that can
> have 3 values - "yes", "no" and "unspecified" - True, False and None
> in Python-speak.
Since True and False are strongly coupled with a *two*-state type, that
just seems needlessly confusing to the reader of the code. Better to use
a non-bool type which makes it explicit that there are three valid
\ “In case you haven't noticed, [the USA] are now almost as |
`\ feared and hated all over the world as the Nazis were.” —Kurt |
_o__) Vonnegut, 2004 |
More information about the Python-ideas