http://www.python.org/dev/peps/pep-0008/#other-recommendations

should look like

```python
refund = debit.refund(
    amount=3000,
    description="Refund for Order #1111",
    meta={
        "merchant.feedback": "positive",
        "user.refund_reason": "not happy with product",
        "fulfillment.item.condition": "OK",
    }
)
```

no spaces between kwargs.