self.conn = sqlite3.connect(db_path)
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The algorithm walks the tree recursively. At each node, it checks: does this node's bounding box overlap with the query rectangle? If not, the entire subtree gets pruned (skipped). If it does overlap, it tests the node's points against the query and recurses into the children.，推荐阅读heLLoword翻译官方下载获取更多信息
Фото: U.S. Navy photo by Mass Communication Specialist 2nd Class Jackson Adkins / Wikimedia
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