I'm experiencing the same issue as this question with Python 3.6. It works well under the Windows console, but it fails to launch or work under MINGW64. Even when I use the direct path of /c/Python36/python.exe, nothing happens. I don't get the interactive REPL with the usual Python interpreter version and >>> prompt, as I do in the Windows console.
Any pointers on how to debug this?
 
    