In Python, how to slice a list to get the first element, and all elements except the last? -


given:

a = [1, 2, 3] b = [4,5]

how get:

[1, 2] [4]

in above example, know works:

a[:-1] b[:-1]

however, when:

c = [1] c[:-1]

the result empty list.

you want following code fragment:

c[:1] + c[1:-1]

for example:

>>> c = [1] >>> c[:1] + c[1:-1] [1]

with c[:1] list consisting of first element (if exists, otherwise empty list), , c[1:-1] second until end except last. if there isn't second element c[1:-1] return empty list.


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