Python GeoModel替代方案

SEARCHED_LOCATION = db.GeoPt("48.8566667,2.3509871") # Location of Paris.
DISTANCE = 50000 #Between 10000 and 150000.
MAX_RESULTS = 300

# Resolution '4' is about 150 kilometers i suppose it's a good compromise.                                                                                                                            
bbox = geocell.compute_box(geocell.compute(SEARCHED_LOCATION,resolution=4))
cell = geocell.best_bbox_search_cells(bbox,geomodel.default_cost_function)

query.filter('location_geocells IN',cell)

# Python filters
def _func(x):
  """Private method used to set the distance of the model to the searched location
  and return this distance.
  """
  x.dist = geomath.distance(SEARCHED_LOCATION,x.location)
  return x.dist

results = sorted(query.fetch(MAX_RESULTS),key=_func) # Order the result by distance
results = [x for x in results if x.dist <= DISTANCE]  # Filter the result