class PostalCode(db.Model):
    id = db.IntegerProperty()
postal_code = db.PostalAddressProperty()
city = db.StringProperty()
province = db.StringProperty()
province_code = db.StringProperty()
city_type = db.StringProperty()
geoLocation = db.GeoPtProperty()
myPostalCode.geoLocation = db.GeoPt(-44.22, -33.55)
AppEngine GeoPt Data Upload