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

# Remove Columns

> Remove columns from an experiment dataset

## Overview

Remove specific columns from an existing experiment dataset.

## Method Signature

```python theme={"system"}
# Synchronous
client.experiments.remove_columns(
    experiment_id: str,
    column_names: List[str]
) -> Dict[str, Any]

# Asynchronous
await client.experiments.remove_columns(
    experiment_id: str,
    column_names: List[str]
) -> Dict[str, Any]
```

## Parameters

<ParamField path="experiment_id" type="string" required>
  The unique identifier of the experiment
</ParamField>

<ParamField path="column_names" type="List[str]" required>
  List of column names to remove from the experiment
</ParamField>

## Returns

Returns a dictionary containing the updated experiment information.

## Example

```python theme={"system"}
from keywordsai import KeywordsAI

client = KeywordsAI(api_key="your-api-key")

# Remove specific columns from experiment
columns_to_remove = ["old_metric", "deprecated_field"]

result = client.experiments.remove_columns(
    experiment_id="exp_123",
    column_names=columns_to_remove
)

print(f"Removed {len(columns_to_remove)} columns from experiment")
```

## Error Handling

```python theme={"system"}
try:
    result = client.experiments.remove_columns(
        experiment_id="exp_123",
        column_names=["old_metric", "deprecated_field"]
    )
except Exception as e:
    print(f"Error removing columns: {e}")
```