> For the complete documentation index, see [llms.txt](https://docs.atfinity.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.atfinity.io/rule-language/operators/dictionary-operators/in-1.md).

# keys()

### Description

`KEYS()` returns a list of the keys of all the entries of a dictionary.

### Example 1

```
{"First Name": "Thorben", "Last Name": "Croisé"}.keys()
```

This creates a simple dictionary with just two entries. We then get the list of the keys of these entries, so this results in `["First Name", "Last Name"]`.

### Example 2

```
p is Person
p.values.keys()
```

This return all the keys of the `values` dictionary of a person.

###


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