Dictionary changing key value Python

Question

I have got a dictionary in the form of:

{0.1: (0.7298579,0.7987254)}

which corresponds to: {test_size: (train_error, test_error)}.

I would like to change the key value test_size into 1 - test_size. So that we obtain:

{0.9: (0.7298579, 0.7987254)}

How can I do this?

Try with the `.pop()` method of dictionary. – DainDwarf Jun 23 '16 at 07:26 — DainDwarf, Jun 23 '16 at 07:26

score 5 · Answer 1 · answered Jun 23 '16 at 07:27

5

You can do this :

>>> d = {0.1:(0.7298579,0.7987254)}
>>> new_d = {1-k: v for k, v in d.items()}
>>> new_d
{0.9: (0.7298579, 0.7987254)}

answered Jun 23 '16 at 07:27

3kt

score -2 · Answer 2 · answered Jun 23 '16 at 07:30

-2

If the dict is not horribly huge, you can just create a new dict and copy the old one with new keys.

answered Jun 23 '16 at 07:30

Vlade

2 Answers2