Yup, according to PEP8 it should either be:

```python
def __init__(self, name, service_class, handler,
             buff_size=DEFAULT_BUFF_SIZE, error_handler=None):
```

or 

```python
def __init__(
    self,
    name,
    service_class, handler,
    buff_size=DEFAULT_BUFF_SIZE,
    error_handler=None,
):
```