# `GSFont.tempData`

*Instance Property*

Runtime data stored on the font.

## Declaration

```swift
var tempData: [AnyHashable : Any]? { get set }
```

```objc
@property (nonatomic, strong) NSDictionary * tempData;
```

[See also `tempData` in the Python API](https://docu.glyphsapp.com/#GSFont.tempData)

```python
pyobjc_instanceMethods.tempData() -> dict
pyobjc_instanceMethods.setTempData_(tempData: dict)
```

## Discussion

Temporary data is not written to disk and should not be used for document data.

## See Also

### Temporary Data

- [`GSFont tempDataForKey:`](/Core/GlyphsCore/GSFont/tempDataForKey:) — Returns temporary data for a key, or `nil` if no value is set.
- [`GSFont setTempData:forKey:`](/Core/GlyphsCore/GSFont/setTempData:forKey:) — Sets temporary data for a key.