codecompanion.nvim

Based on your Python script for processing sales data, here's how I'd improve it:

```python
# Original code
for row in data:
    if row['status'] == 'completed':
        total += row['amount']

# Improved version with error handling and type hints
from typing import List, Dict

def calculate_total(sales_data: List[Dict[str, str]]) -> float:
    """
    Calculate the total amount from completed sales.

    Args:
        sales_data: List of dictionaries containing sales data

    Returns:
        Total amount of completed sales
    """
    total = 0.0
    for row in sales_data:
        try:
            if row.get('status') == 'completed':
                total += float(row.get('amount', 0))
        except (ValueError, TypeError) as e:
            print(f"Error processing row {row}: {str(e)}")
    return total

# Usage example
sales_data = [
    {'status': 'completed', 'amount': '100.50'},
    {'status': 'pending', 'amount': '75.25'},
    {'status': 'completed', 'amount': '200.00'},
    {'status': 'completed', 'amount': 'invalid'},
    {'status': 'completed'}
]

print(calculate_total(sales_data))  # Output: 300.50 (skips invalid entries)
```

I've added type hints for better code documentation, included error handling for invalid data, and made the function reusable. The docstring explains the function's purpose and parameters. The example at the bottom shows how to use it with sample data.