Cezary Wagner

Django is very old framework and little slow - if you want something modern faster try Jinja2. Django is not bad for ORM but Jinja2 is better for cloud or no SQL since more clear and faster - also more extensible with macros (Django is not bad still). If you know Django Jinja2 it is similar.

If you are goot at JAVA language, JHipster tool can generate pretty much all structures. Then, you can focus on backend logic and frontend implementation.

https://www.jhipster.tech/

If you choose Python,

Django is powerful framework but it have longer learning curve as it is big framework than Flask.

As Flask is microframework, very intuitive and easy to start, but you will need to configure manually some packages when your application grows.(e.g. flask-login for user features )

Yes, Pros and Cons

Python + Flask as backend is good option for you as @Cezary Wagner mentioned.

PyCharm is IDE tool, VS code can be alternative.

Jinja2 is popular template engine in python world. (https://en.wikipedia.org/wiki/Template_processor).

Not sure how big your data is for 120*400 matrix chart. According to data per page, this can be bottle neck of between your application and DB. Of course this will depend on how many users will access your app concurrently. Depends on your performance need, you might need to change some stack.

Aren't you comparing apples to "carts of apples"? Jinja is a templating library, while Django is a complete framework with its own ORM, routing, templating, config engine etc. Flask is a "microframework", it started out as an April fools joke, but caught traction pretty fast. Despite the appearance, Flask is not a "true microframework" though (it uses not-so-micro-sized libraries like werkzeug, jinja to do the actual heavy lifting... hence the joke) Flask was an answer to another quite popular microframework named "Bottle". Armin had wanted to add some features to Bottle, the maintainer refused, so he created "Flask".

I like Flask, but mostly for trivial, smallish projects. If you need more features then you're better off with Django and it's massive ecosystem. It's fun to roll your own solution for the first time, but it quickly gets boring. At the end of the day, developer productivity is the key.

You can use C++/C with Python. Current C++ is not the old one so memory management can be automated whatever memory management in Python and C++ is different. You need understand how both behaves. Pointers, references, stacks, core types - in Python it is simple. Same with int in Python is one type in C++ 8 types for int with overflows.

Everyone says Python is great but they also say that it doesn't cover all programming concepts which puts you down the road. What book can you recommend me to get out of the beginner? I have seen that most content only lets you in the beginner zone. I struggle to read Python's manual, I have to decipher it. For now, I know what is built-in commands, some web scrapping, and some libraries. What else am I missing here?