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# Show dtypes

By default, the columns dtypes are shown only for Polars dataframes. If you prefer, you can change the value of `show_dtypes` to either `True` or `False` to always or never show the index (the default value being `"auto"`).

```{code-cell} ipython3
import itables

itables.init_notebook_mode()
```

You can change this behavior globally with e.g.
```python
itables.options.show_dtypes = True
```

or locally by passing an argument `show_dtypes` to the `show` function:

```{code-cell} ipython3
itables.show(itables.sample_dfs.get_countries(), show_dtypes=True)
```