type hint for fixed length iterables

Asked Sep 03 '20 at 12:39

Active Sep 03 '20 at 12:41

Viewed 94 times

I have a function which takes fixed length lists or tuples and I was wondering how I should type hint them. So, the function signature is:

def order_pts(pt1: Iterable, pt2: Iterable, pt3: Iterable)

Where each of these are basically 2-dimensional tuples/list. I can annotate them as Iterable but I am not sure how to specify that these are 2 element collections?

edited Sep 03 '20 at 12:41

Adirio

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asked Sep 03 '20 at 12:39

Luca

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Is the question about throwing error if these tuples/lists are not 2d? – aerijman Sep 03 '20 at 12:42
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2-D tuples/lists are not the same to fixed length tuples/lists. Can you please write down an example of an input argument? – Adirio Sep 03 '20 at 12:42
@aerijman He is talking about type hinting not about type asserting. – Adirio Sep 03 '20 at 12:42

type hint for fixed length iterables

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