Counting the number of elements in a list - help.

[Steingrim Dovland]

"Bryce C. Mason" <bmason at rand.org> writes:

> 1) a function which returns the number of elements in a list
> 2) a function which takes a list and an index and returns a zero when that
> list index is out of range.

I think you're looking for len(), a built in function.

>>> x = [1,2,3]
>>> len(x)
3

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