Bad news and good news.
It’s not possible to code the Term 2 and most of the Term 3 exercises in Python. On a practical level, the review system is completely set up for C++ submissions. On a philosophical level, C++ is the language of the automotive industry, and runs much faster than Python, and most hiring managers in the industry require that candidates know it.
On the bright side, Udacity has a free C++ course now. You should dive in and see whether you can wrap your mind around C++ or not!