---
metadata:
  - name: generator
    content: Diplodoc Platform v5.54.5
alternate:
  - https://catboost.ai/docs/en/concepts/python-reference_catboostipythonwidget_update_widget.md
  - href: en/concepts/python-reference_catboostipythonwidget_update_widget.md
    type: text/markdown
    title: Markdown version
  - href: ../llms.txt
    type: text/markdown
    title: llms.txt
---
> **Documentation Index:** Fetch the complete configuration index at https://catboost.ai/docs/en/llms.txt

# start

<!-- source: en/_includes/work_src/reusage/catboostipythonwidget__purpose__full__div.md -->
Plot metrics for all training, metric evaluations and cross-validation runs that have logs in the given directory.

For example, let's assume that two trainings are launched simultaneously. Use this method to plot a chart in  [Jupyter Notebook](https://catboost.ai/docs/en/features/visualization_jupyter-notebook.md) and monitor the statistics for both trainings in real time.
<!-- endsource: en/_includes/work_src/reusage/catboostipythonwidget__purpose__full__div.md -->

## Method call format {#call-formmat}

```python
start()
```