On Sat, 03 Jan 2009 14:53:12 -0800, Bryan Olson wrote about testing whether or not an index is in a slice:
> I'm leaning towards mmanns' idea that this should be built in. What's the use-case for it? > Handling > all the cases is remarkably tricky. Here's a verbose version, with a > little test: [snip code] Here's a less verbose version which passes your test cases: def inslice(index, slc, len): """Return True if index would be part of slice slc of a sequence of length len, otherwise return False. """ start, stop, stride = slc.indices(len) if stride < 0: return (start >= index > stop) and ((start-index) % -stride == 0) else: return (start <= index < stop) and ((index-start) % stride == 0) (Hint: help(slice) is your friend.) -- Steven -- http://mail.python.org/mailman/listinfo/python-list