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

# Update Cells in a Dataset

> You can update cells in a dataset via the Python SDK or directly via the API.

## Using the Python SDK

The Athina Python SDK provides a simple interface to update cells in your datasets:

```python
from athina_client.dataset import Dataset

# Define the cells you want to update
cells_to_update = [
    {"row_no": 1, "column_name": "query", "value": "Updated query text"},
    {"row_no": 2, "column_name": "response", "value": "New model response"}
]

# Update the cells in the dataset
try:
    result = Dataset.update_cells("your-dataset-id", cells_to_update)
    print(f"Successfully updated cells: {result}")
except Exception as e:
    print(f"Error updating cells: {e}")
```

### Parameters

* `dataset_id` (str): The ID of the dataset to update cells in.
* `cells` (List\[Dict]): A list of cells to update, where each cell is a dictionary containing:
  * `row_no` (int): The row number (1-based indexing) of the cell to update.
  * `column_name` (str): The name of the column containing the cell to update.
  * `value` (Any): The new value for the specified cell.

### Return Value

The method returns a dictionary with the API response, typically containing a success message.

### Error Handling

If the API call fails, a `CustomException` is raised with details about the error.

## Direct API Calls

You can also update cells by making a direct API call:

```bash
curl --location --request PUT 'http://api.athina.ai/api/v1/dataset_v2/<DATASET_ID>/cells' \
--header 'athina-api-key: <ATHINA_API_KEY>' \
--header 'Content-Type: application/json' \
--data '{
    "cells": [
        {
            "row_no": 1,
            "column_name": "query",
            "value": "Hello World"
        },
        {
            "row_no": 3,
            "column_name": "response",
            "value": "Greetings from Athina!"
        }
    ]
}'
```

### Request Format

* **Method**: PUT
* **URL**: `http://api.athina.ai/api/v1/dataset_v2/<DATASET_ID>/cells`
* **Headers**:
  * `athina-api-key`: Your Athina API key
  * `Content-Type`: application/json
* **Body**:
  ```json
  {
      "cells": [
          {
              "row_no": <row_number>,
              "column_name": "<column_name>",
              "value": <new_value>
          },
          ...
      ]
  }
  ```

### Response Format

If the updates are successful, you will receive a response similar to:

```json
{
    "status": "success",
    "data": {
        "message": "Cells updated successfully"
    }
}
```