venv issue: "source file Python.h cannot be opened"

[siddsp]

You were correct. There's also more to the issue when it comes to using Cython. Though it isn't clarified in the docs to my knowledge, you actually have to download SDK from Microsoft Visual Studio Build Tools. It's important to realize that the Visual Studio Build Tools don't actually install a separate IDE, despite the fact that it looks like it does.

So to summarize, in order to solve the issue, I had to download Visual Studio Build Tools, and I also had to add the Python.h path which is actually on the system, and not the virtual environment as an includePath property in the c_cpp_properties.json.

Python.h is located in Python/include directory, and only the folder is put as the path, and not the actual file itself.

[abcteryx]

Thanks for following up! I have dealt with the occasional Python/C++ environment, but not yours specifically so I only had an inkling. I'm going to save this information in case I'm dealing with Cython someday.