[Python-Dev] Currently baking idea for dict.sequpdate(iterable, value=True) (original) (raw)

Walter D�rwald walter@livinglogic.de
Tue, 26 Nov 2002 11:49:35 +0100

Guido van Rossum wrote:

>> x = {}.sequpdate(...) >> >>which suggests that you're really looking for a different constructor >>as a class method. > >Yes! > >Will revise the patch accordingly >and use Just's suggested name, fromseq(). > >Do you prefer the default value to be None or True? >Earlier discussions on python-dev showed that >True is more meaningful to some in the context of >membership testing. OTOH, dict.setvalue and >dict.get both use None.

I think it should be None -- let's be explicit when we want True.

And maybe the method should be named fromkeyseq, because there is another constructor that creates the dict from a sequence of items. (Maybe this constructor should be made into a class method fromitemseq?)

Bye, Walter D�rwald