I've been reading over some sample code lately and I've read quite a few websites but I just can't seem to get the query right to give me an answer I'm looking for. If anyone could help me out I'd appreciate it.
Answer
It slices
x[startAt:endBefore:skip]
if you use skip = 2
, every other element the list beginning at startAt
and ending at endBefore
will be selected. [Remember: indices live BETWEEN list elements]
To see this, enter
x = range(100)
at the Python prompt. Then try these things
x[::2]
x[::3]
x[10:40:6]
and see what happens.
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