if r.status_code != 200:
The pruned nodes (in red) represent entire regions of space that the algorithm never examines. The points inside those regions are never checked. Compare the "Nodes Visited" count to the total number of points. The quadtree is doing far less work than a brute-force scan.。关于这个话题，服务器推荐提供了深入分析
Persist data that survives across game sessions，详情可参考WPS下载最新地址
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Here's the equivalent with the new API: