list comprehension for splitting strings into pairs

[Steven Bethard]

Steven Bethard <steven.bethard <at> gmail.com> writes:
> >>> splits = [':' in item and item.split(':', 1) or [item, None]
> ...           for item in lst]
> >>> splits = [[int(i), p is not None and int(p) or p]
> ...           for i, p in splits]
> >>> splits
> [[1, None], [1, 2], [3, None], [-1, 4]]

So I realized that this doesn't quite work if the second item in a split is 0 -
- you'll end up with None instead of 0.

Steve