Adding an entry to a python tuple

Question

I have a list of tuples representing x,y points. I also have a list of values for each of these points. How do I combine them into a list of lists (i.e one entry for each point [x,y,val]) or a list of tuples?

Thanks

ephes · Accepted Answer · 2010-02-17 16:18:07Z

10

You can't add entries to tuples, since tuples are immutable. But you can create a new list of lists:

new = [[x, y, val] for (x, y), val in zip(points, vals)]

answered Feb 17, 2010 at 16:18

ephes

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2 Comments

mikip Over a year ago

Thanks ephes, just what I was looking for

FogleBird Over a year ago

Use (x, y, val) if you want the result to still be a list of tuples.

djc · Accepted Answer · 2010-02-17 16:17:35Z

1

Tuples are immutable, they can't be modified. Convert it to a list, then convert it back if you want to (list((a, b))).

answered Feb 17, 2010 at 16:17

djc

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