Check out this link on StackOverflow:
https://stackoverflow.com/questions/13327280/creating-dll-from-a-python-file/13327324
Basically you can create a dynamic link library (DLL) from Python and then call this DLL from your C++ application. If Takion supports DLLs this should work.
you could use zeromq or similar and pass in messages. Or pybind, cython, ...
Is Takion a quantitative trading platform?
You can check their website: https://www.takiontechnologies.com/