> ## Documentation Index
> Fetch the complete documentation index at: https://bazel-flags-doc.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# Facts

User-provided data attached to a module extension that is persisted across reevaluations of
the extension.

This type supports dict-like access (e.g. \`facts\["key"]\` and \`facts.get("key")\`) as well as
membership tests (e.g. \`"key" in facts\`). It does not support iteration or methods like
\`keys()\`, \`items()\`, or \`len()\`.

## Members

* [get](#get)

## get

```
unknown Facts.get(key, default=None)
```

Returns the value for `key` if it exists, or `default`.

### Parameters

ParameterDescription`key`[string](../core/string.html);
required

The key to look up.
`default`
default is `None`

The value to return if `key` is not present.