Reference: https://blog.csdn.net/u014525760/article/details/80676065
After compiling with:
swig -python -c++ example.i && python setup.py build_ext --inplace
three more files: example.py, _example.so, example_wrap.cxx will be generated. With these files in directory, you can now import them into python for future use. Among these files, .py and .so files are necessary for use.
