## Update a dataset item

`dataset_items.update(strdataset_item_id, DatasetItemUpdateParams**kwargs)  -> DatasetItem`

**patch** `/v5/dataset-items/{dataset_item_id}`

Update the data payload and optional file associations of a dataset item.

The request replaces the item's data in full and, if provided, its file associations; there is no
partial-field merge. Data keys may not collide with reserved dataset- or evaluation-item field
names, and any referenced files must exist and be a supported media format. Items that are
archived or soft-deleted cannot be updated. The update is applied as a new dataset version rather
than overwriting the previous record, so prior versions remain retrievable.

### Parameters

- `dataset_item_id: str`

- `data: Dict[str, object]`

  Updated dataset item data

- `files: Optional[Dict[str, str]]`

  Files to be associated to the dataset

### Returns

- `class DatasetItem: …`

  - `id: str`

    The unique identifier of the entity.

  - `content_hash: str`

  - `created_at: datetime`

    The date and time when the entity was created in ISO format.

  - `created_by: Identity`

    The identity that created the entity.

    - `id: str`

    - `type: Literal["user", "service_account"]`

      - `"user"`

      - `"service_account"`

    - `object: Optional[Literal["identity"]]`

      - `"identity"`

  - `data: Dict[str, object]`

  - `updated_at: datetime`

    The date and time when the entity was last updated in ISO format.

  - `archived_at: Optional[datetime]`

    The date and time when the entity was archived in ISO format.

  - `dataset_id: Optional[str]`

  - `files: Optional[Dict[str, str]]`

  - `object: Optional[Literal["dataset.item"]]`

    - `"dataset.item"`

### Example

```python
import os
from scale_gp_beta import SGPClient

client = SGPClient(
    api_key=os.environ.get("SGP_API_KEY"),  # This is the default and can be omitted
)
dataset_item = client.dataset_items.update(
    dataset_item_id="dataset_item_id",
    data={
        "foo": "bar"
    },
)
print(dataset_item.id)
```

#### Response

```json
{
  "id": "id",
  "content_hash": "content_hash",
  "created_at": "2019-12-27T18:11:19.117Z",
  "created_by": {
    "id": "id",
    "type": "user",
    "object": "identity"
  },
  "data": {
    "foo": "bar"
  },
  "updated_at": "2019-12-27T18:11:19.117Z",
  "archived_at": "2019-12-27T18:11:19.117Z",
  "dataset_id": "dataset_id",
  "files": {
    "foo": "string"
  },
  "object": "dataset.item"
}
```