CODEWITHSUNDEEP
python-3.xlistslice
user1717828
user1717828

Reputation: 7225

Single slice getting elements from beginning and end of list in Python?

The first and last N elements of a list in Python can be gotten using:

N = 2
my_list = [0, 1, 2, 3, 4, 5]
print(my_list[:N] + my_list[-N:])
# [0, 1, 4, 5]

Is it possible to do this with a single slice in pure Python? I tried my_list[-N:N], which is empty, and my_list[N:-N], which gives exactly the elements I don't want.

Upvotes: 0

Views: 92

Answers (1)

MisterMiyagi
MisterMiyagi

Reputation: 50076

For the builtin types, slices are by definition consecutive – a slice represents a start, end and step between them. There is no way for a single slice operation to represent non-consecutive elements, such as head and tail of a list.

Upvotes: 1

Related Questions