# constants { #tvbo.ontology.constants }

`ontology.constants`

Constants.

This module contains the constants used in the project.
| Variable | Description |
|----------|----------|
| ROOT_DIR | Package directory |
| DATA_DIR | Data directory |

## Attributes

| Name | Description |
| --- | --- |
| [DATA_DIR](#tvbo.ontology.constants.DATA_DIR) |  |
| [ONTO_DIR](#tvbo.ontology.constants.ONTO_DIR) |  |
| [ROOT_DIR](#tvbo.ontology.constants.ROOT_DIR) |  |
| [SC_DIR](#tvbo.ontology.constants.SC_DIR) |  |