Analysis of StackExchange datasets concering users of this platform using various R libraries (base R, data.table, dplyr) and Python (numpy, pandas). The datasets that are being analysed are in the "datasets" file, mainly: Badges, Comments, Tags, Posts, Users, Votes, PostLinks. There is r-script for the functions and then rmd file that is the summary of the project. I highly recommend reading the summary file first (Kubita_Mateusz_PD2.html) in order to get to know what is going on in this project. The solution using Python is in the Python file. This project was part of a classes about Data Exploration in R-language and Python.