bounds.py

@register_service('places.json', [json])
def places_json(
    ctx, north=None, east=None, south=None, west=None, bounds=None,
    id=0, deadline=None, soon=None, verified=None, auto=None,
    zoom=None, order=None, via=None
    ):

    if bounds:
        (south, west), (north, east) = [
            [float(_part) for _part in part.split(', ')]
            for part in bounds[2:-2].split('), (')
            ]
    else:
        north, east, south, west = map(float, [north, east, south, west])