# `TrainBegin`

### *class* capymoa.ocl.evaluation.events.TrainBegin[[source]](https://github.com/adaptive-machine-learning/CapyMOA/blob/3e255b1/src/capymoa/ocl/evaluation/events.py#L26)

Bases: [`Event`](capymoa.ocl.events.Event.md#capymoa.ocl.events.Event)

On training start.

#### \_\_init_\_() → [None](https://docs.python.org/3/builtins/constants.html#None)