If you work with graphs I can wholeheartedly recommend plotly/dash. It has a very intuitive API. And you can build a single page app dashboard with interactive

If you work with graphs I can wholeheartedly recommend plotly/dash. It has a very intuitive API. And you can build a single page app dashboard with interactive graphs and buttons, sliders etc. in a few hours. It is based on Flask. If you just want API and no frontend, have a look at FastAPI.