如何在Web上动态可视化数据集？

I am developing a website where I have around 800 data sets. I want to visualize my data using bar charts and pie charts, but I don't want to hard code this for every data set. What technology can I use to dynamically read the data from a json/csv/xml and render the graph? (btw I'm going to use a Python based backend (either Django or Flask))I am developing a website where I have around 8