astral.py 文件源码

def __getitem__(self, key):
        if self.cache and key in self.geocache:
            return self.geocache[key]

        location = Location()
        try:
            self._get_geocoding(key, location)
            self._get_timezone(location)
            self._get_elevation(location)
        except URLError:
            raise AstralError(('GoogleGeocoder: Unable to contact '
                               'Google maps API'))

        url = 'http://maps.google.com/maps?q=loc:%f,%f'
        location.url = url % (location.latitude, location.longitude)

        if self.cache:
            self.geocache[key] = location

        return location