Do some basic analysis on multiple stocks using python

I have a list of 30 stocks, I have some question that I want to find out about by using python. I already have the basic scripts for preparing the data I need.

I have a week for this project. it is not a complicated project at all.
example:
what is the return for each stock during the first 3 days?plot it.
which stock has the highest spike?

it is more like a study for myself, so I need the code be simple.


Thank you