CNTK Python known issues and limitations - eldakms/CNTK GitHub Wiki
- The core API itself is implemented in C++ for speed and efficiency and python bindings are created through SWIG. We are increasingly creating thin python wrappers for the APIs to attach docstrings to, but this is a work in progress and for some of the APIs, you may directly encounter SWIG generated API definitions (which are not the prettiest to read).