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Start your free trialNatalie Heyde
1,736 PointsWhy are there 4 elements in the slices.py example?
Hi,
I thought slices could only have 3 elements in them. I was wondering why in the slices.py file, there is a slice with 4 elements that looks like: nums_partial = nums[0::2] ?
Unless I'm interpreting it incorrectly, and it's more like nums_partial = nums[0:_:2], meaning a start of 0, no stop, and step of 2?
Is : a placeholder, or a separator for these values?
1 Answer
Steven Parker
231,272 PointsThe colon (:
) is the separator between the arguments (up to 3) in a slice.
You are correct that the expression nums[0::2]
represents a start of 0, no stop, and a step of 2.
There is no limit on the number of elements a slice can contain. With these arguments, the resulting slice (nums_partial
) will contain half as many elements as the original (nums
) has.
Natalie Heyde
1,736 PointsNatalie Heyde
1,736 PointsThank you, Steven!