How to get last items of a list in Python?


Question

I need the last 9 numbers of a list and I'm sure there is a way to do it with slicing, but I can't seem to get it. I can get the first 9 like this:

num_list[0:9]

Any help would be great.

1
233
7/3/2015 5:53:10 PM

Accepted Answer

You can use negative integers with the slicing operator for that. Here's an example using the python CLI interpreter:

>>> a = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12]
>>> a
[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12]
>>> a[-9:]
[4, 5, 6, 7, 8, 9, 10, 11, 12]

the important line is a[-9:]

426
3/14/2009 8:22:54 PM

a negative index will count from the end of the list, so:

num_list[-9:]

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