If all you are focused on is web development, then no - python is likely not the language for you. Especially if you want to do frontend. The reason that python is popular isn't because it has particularly unique features. It's that it has a huge swathe of useful libraries that no other language even comes close to.

Numpy, scipy, matplotlib, flask, django, tensorflow, ... all the way down to tiny packages like emcee makes it an extremely compelling ecosystem to develop software in.