human
Here's a good function header given the following:
I wrote the below code

    def inner(f):
        @wraps(f)
        def wrapper(*args, **kwargs):
            try:
                return f(*args, **kwargs)
            except Exception as err:
                if sorl_settings.THUMBNAIL_DEBUG:
                    raise
                logger.error((u'Thumbnail    filter    failed:    %s' % err.message), exc_info=sys.exc_info())
                return error_output
        return wrapper
    return inner

What's a good function header?
assistant
#Here's a good function header.

def safe_filter(error_output=u''):