This pie chart visualizes programming language popularity using a dataset of user counts from a CSV file. It uses D3.js (v7) with its `pie` and `arc` APIs to generate the slices, which are colored via a category scale and rendered as SVG paths with stroke outlines. Labels are placed at each arc’s centroid, and a legend with colored rectangles is drawn on the left. The chart also includes dummy x- and y-axis labels, though these are not functionally linked to the data.