Slice list backwards from index 0 in python

Question

Let's say I have the following list:

the_list = ['one','two','three','four','five']

How can I slice this python list so that my output is the following (print order does not matter):

'one','five','four'

I essentially want to start at index 0 and then slice backwards

Thanks!

Slicing of lists has no "wraparound", you can slice forward, backward, and every k-th element, but not a wrap around (both forward and backward), you thus will need to perform two slices and "append" subslices. — willeM_ Van Onsem
– willeM_ Van Onsem, Commented Oct 19, 2018 at 20:21

BernardL · Accepted Answer · 2018-10-19 20:42:59Z

2

Try this:

the_list[0:1] + the_list[-1:2:-1]

This adds 2 list, where your second list starts from the last element, takes the step size of 2 and in reverse. You can't do multiple slicing but you can select what items to add on or be appended.

edited Oct 19, 2018 at 20:42

answered Oct 19, 2018 at 20:37

BernardL

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BernardL Over a year ago

You should also note that this method applies specifically to your sample list. Glad it helped.

Emma G. · Accepted Answer · 2018-10-19 20:37:56Z

0

You could append your first element at the end of the list, and then slice backwards, excluding the first element:

the_list.append(the_list[0]) [the_list[-i] for i in range(1,len(the_list))]

answered Oct 19, 2018 at 20:37

Emma G.

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