[est]

Python stands on the shoulders of the giants, namely MPI/MKL/BLAS/LAPACK, which was the core of numpy, scipy and sympy. Maybe even SageMath.

If you are developing ML/DS models, a REPL environment comes very handy, there is IPython.

You'll find a large chunk of your time is spent on gathering, cleaning data, which Python really excels.

Make a website that integrates or visualize the data with Python? Sure

You can not find a second language this versatile and has a well supported ecosystem.