这也契合国家宏观政策的走向。在“十五五”规划建议中，将“坚持扩大内需”表述为“战略基点”。
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This approach could be used with any REPL environment. Code cells could be different languages/runtimes that execute independently. We could even go a step further and create an IPC layer between these language runtimes to create polyglot notebooks.
if (n <= 1) return;