def format_decimal(self, altitude=None):
        latitude = "%s" % self.latitude
        longitude = self.longitude % "%s"
        coordinates = [latitude, longitude]
        
        if altitude is None:
            altitude = bool(self.altitude)
        if altitude:
            if not isinstance(altitude, basestring):
                altitude = 'km'
            coordinates.append(self.format_altitude(altitude))
        
        return ", ".join(coordinates)
dataset/ETHPy150Open dgraziotin/dycapo/geopy/point.py/Point.format_decimal/swapped operands of `%`