如何将字典中的值列表更改为一组值？

Question

So inside the dictionary, I have values that are lists with [] brackets. But I want to change them into {} brackets. Does anyone have any idea how to do this?

From:

{hello: ['1', '2', '3']}

To:

{hello: {'1', '2', '3'}}

Answer 1

You can convert the list inside the dictionary into a set like you would with any other list, too:

>>> a = {'hello': ['1', '2', '3']}
>>> a
{'hello': ['1', '2', '3']}
>>> a['hello'] = set(a['hello'])
>>> a
{'hello': {'2', '3', '1'}}

Sets aren't ordered, which explains the mixed-up order of {'2', '3', '1'} .

Also, you didn't define your dictionary key hello in your question so I used a simple string here.

Answer 2

Assuming "hello" is a variable:

 d = {hello: ['1', '2', '3']}
 dn = { k: set(v) for k, v in d.items() } #iterate through the dict and replace the lists by sets