---
title: "MappingKey"
sidebar_label: "MappingKey"
description: "The clika_runtime.pytree MappingKey class."
---

<!-- Generated by tools/api_reference/generate_api_docs.py. Do not edit. -->

A key into a mapping (dict, OrderedDict, defaultdict, custom mapping).

## `__init__`

```python
__init__(self, key: 'Any') -> None
```

Initialize self.  See help(type(self)) for accurate signature.

## `get`

```python
get(self, mapping: 'Mapping[Any, Any]') -> 'Any'
```