> ## Documentation Index
> Fetch the complete documentation index at: https://docs.activeviam.com/llms.txt
> Use this file to discover all available pages before exploring further.

# atoti.Column

### *final class* atoti.Column

Column of a [`Table`](./atoti.table#atoti.Table).

| [`data_type`](./atoti.Column.data_type#atoti.Column.data_type)             | The type of the elements in the column.                                                                                                    |
| -------------------------------------------------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------ |
| [`default_value`](./atoti.Column.default_value#atoti.Column.default_value) | Value used to replace `None` inserted values.                                                                                              |
| [`isin`](./atoti.Column.isin#atoti.Column.isin)                            | Return a condition evaluating to `True` for elements of this column included in the given *elements*, and evaluating to `False` elsewhere. |
| [`isnull`](./atoti.Column.isnull#atoti.Column.isnull)                      | Return a condition evaluating to `True` where this container evaluates to `None`, and evaluating to `False` elsewhere.                     |
| [`name`](./atoti.Column.name#atoti.Column.name)                            | The name of the column.                                                                                                                    |