Q: I'm now studying Python and it's interesting.

I have a programming basis in C++, Java, and other programming languages.

However, it's exciting for me to learn Python. この表現は自然ですか?
A: I’ve studied python too :)
Q: I find that you can see that I learn Python too slowly. Are there any quick methods to learn Python? Thank you! (selfie) この表現は自然ですか?
A: Btw maybe try building something in python and look up how it works as you go. Becomes more interesting when you have a goal
Q: I'm starting to get used to Python, at least in a basic sense. この表現は自然ですか?
A: I think it sounds ok but I think “the basics sounds” more natural
Q: "Python is a programming language gearing toward the professional field such as AI, Robot, and Block Chain." この表現は自然ですか?
A: Python is a programming language geared towards professional fields such as AI, robotics, and blockchain.

That's mainly because of their libraries (eg. TensorFlow), I think, rather than the language itself.
Q: I've been learning/studying Python この表現は自然ですか?
A: " Ive been studying pythons" or " Ive been studying/learning about pythons"