Return the latitude+longitutde of the picture.
        Returns None if no location given for this pic.

def getLocation(self):
        """
        Return the latitude+longitutde of the picture.
        Returns None if no location given for this pic.
        """
        method = 'flickr.photos.geo.getLocation'
        try:
            data = _doget(method, photo_id=self.id)
        except FlickrError: # Some other error might have occured too!?
            return None
        loc = data.rsp.photo.location
        return [loc.latitude, loc.longitude]