在和boost ::蟒蛇::导入后会发生什么？ [英] What happens during and after boost::python::import?

问题描述

升压文档不指定。当我使用提振::蟒蛇::进口，正是被指定模块导入？我的猜测是在'__ __主（只是为了确保）。

The Boost documentation does not specify this. When I use boost::python::import, where exactly is the specified module imported? My guess would be in '__main__' (just to make sure).

此外，当模块对象超出范围会发生什么？鉴于Boost的文档＆MDASH的措辞; 返回：对象实例持有到导入模块的引用＆MDASH;我猜只有参考超出范围，模块对象仍然发现在'__ __主（或者是任何一个被导入）。

Also, what happens when the module object goes out of scope? Given the wording in Boost's docs — "Returns: An instance of object which holds a reference to the imported module" — I would guess only the reference goes out of scope, the module object is still found within '__main__' (or wherever it was imported).

推荐答案

的基本机制是 PyImport_ImportModule ，并没有，它不触及 __ __主要。成功导入模块插入 sys.modules中 字典，所以当你DECREF什么函数返回的对象没有被释放 - 仍有至少是一个参考活着

The underlying mechanism is PyImport_ImportModule, and no, it doesn't touch __main__. Successfully imported modules are inserted into sys.modules dict, so the object is not freed when you DECREF what the function returns — there is still at least that one reference alive.

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