Real-world use cases for map's None fill-in feature?
Fri Jan 13 05:12:10 CET 2006
"Raymond Hettinger" <python at rcn.com> writes:
> > I see at least a few cases of
> > map(None, field_names, values)
> > but it's not clear what the expectation is for the size of the two lists.
> Thanks for the additional datapoint. I'm most interested in the code
> surrounding the few cases with multiple inputs and whether the code is
> designed around equal or unequal length inputs. The existence of the
> latter is good news for the proposal. Its absence would be a
> contra-indication. If you get a chance, please look at those few
> multi-input cases.
ISTR there's also a plan to eliminate map in Python 3.0 in favor of
list comprehensions. That would get rid of the possibility of using
map(None...) instead of izip_longest. This needs to be thought through.
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