> For the complete documentation index, see [llms.txt](https://docs.macilib.org/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.macilib.org/docs/maci/object/methods/is_child_map.md).

# is\_child\_map

Checks if an attribute name in the [MaciDataObj](/docs/maci/object.md) is a child mapped to a parent, and returns a bool.

{% hint style="info" %}
data.is\_child\_map()  ->  bool
{% endhint %}

\
*Basic Example checking if an attribute name is a child in the* [*MaciDataObj*](/docs/maci/object.md)

```python
result = data.is_child_map('attr2')
```

In this example, we simply use the is\_child\_map method on the [MaciDataObj](/docs/maci/object.md) to get a boolean check if the attribute name passed into the parameter is a child mapped to a parent, and assign the returned bool to a variable.

For more information on the mapping concept, see [Map Assignment Glyph](https://docs.macilib.org/docs/maci/language/v1.0.0#map-assignment-glyph) in the language section and [map\_attr](/docs/maci/object/methods/map_attr.md).

### partner methods

Methods that provide related utility to this method

[map\_attr](/docs/maci/object/methods/map_attr.md)  ->  Map an attribute name\
[unmap\_attr](/docs/maci/object/methods/unmap_attr.md)  ->  Unmap an attribute name

### parameters & arguments

Describes all parameter functionality and accepted data types

<details>

<summary>attr_name:  str</summary>

First and only required positional argument. Accepts strings

Use this parameter to pick the attribute name to check.

</details>