On 7/15/2011 6:19 AM, Steven D'Aprano wrote:
Use None as default. Requiring users to use your special value would be
a nuisance. They may have data prepared separately from your module.
Rob Williscroft wrote:
MISSING = MissingObject()
def mean( sequence, missing = MISSING ):
This is also a good idea.
So you think the right API is to allow the caller to specify what counts as
a missing value at runtime? Are you aware of any other statistics packages
that do that?
AFAIK, standard feature on major packages. BMDP, SAS and SPSS as I
remember. Missing values could be specified on a per column basis.
--
Terry Jan Reedy
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