使用setup.py
例如：
在碰到pyx文件的时候，如果不编译会报错。
ModuleNotFoundError: No module named 'keras_retinanet.utils.compute_overlap', how do I fix this? Most likely you are running the code from the cloned repository. This is fine, but you need to compile some extensions for this to work (python setup.py build_ext --inplace).