python - PyBind - Python 到 C++ 接口

Question

使用 PyBind 从 Python 接口和调用 C++ 代码将使 Python 代码更快是有道理的，但是对于从 C++ 调用的 Python 代码来说是否如此？

换句话说，当从 C++ 调用 Python 代码时，PyBind 是否只提供接口而不是像 Cython 那样提供性能增益？

标签： pythonc++pybind11

Answer 1

First, code with pybind is NOT always faster than python, it depends on use case(example). Binding has overhead and it might take away all performance gain from calling native C++ code.

No magic happens when you call python code from С++. Same amount of work needs to be done in both cases by same machinery.