What does the last line stand for in this Python function?

Question

def f(x):
    xs=str(x)
    if len(xs) == 1:
        return int(xs)
    n = int(xs[0]) + int (xs[1])
    if len (xs) == 2:
        return n
    else:
        return n+f(xs[2:])

Speciffically, what does f(xs[2:]) do?

What are you asking? `xs[2:]` is slice notation as everybody said. If you ask about `return n+f(......)`, it is recursion. — Mp0int, Dec 20 '13 at 15:05

score 3 · Accepted Answer · edited May 23 '17 at 12:28

3

It is called slicing notation and it is creating a copy of the list excluding the first two items.

edited May 23 '17 at 12:28

Community

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answered Dec 20 '13 at 14:35

thefourtheye

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Also note that it is causing recursion. – gregb212 Dec 20 '13 at 14:41
@gregb212 Perhaps that was intentional :) – thefourtheye Dec 20 '13 at 14:42
Yes...it's a quiz and I didn't catch it... thank you! – Andra Dec 20 '13 at 14:43
@thefourtheye Oh silly me... just assumed you glanced over it. Definitely was not 'in' on that one. – gregb212 Dec 20 '13 at 18:20

What does the last line stand for in this Python function?

1 Answers1