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# Show Index

By default, the index of a Series/DataFrame is shown only when not trivial, i.e. when it has a name, or when it differs from a range index. If you prefer, you can change the value of `showIndex` to either `True` or `False` to always or never show the index (the default value being `"auto"`).

```{code-cell} ipython3
import pandas as pd

import itables

itables.init_notebook_mode()
```

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

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

```{code-cell} ipython3
df_with_range_index = pd.DataFrame({"letter": list("abcd")})
itables.show(df_with_range_index, showIndex=True)
```