Economist-style data-visualisation system for matplotlib/seaborn — theme, finalize() title-stack, direct labels, and 20+ chart helpers with a when-to-load index of 39 worked examples. Use whenever creating, restyling or reviewing charts/plots/figures in Python: it owns figure sizing, typography, titles/descriptors/sources, annotation conventions and chart-type selection. Not for non-matplotlib charting (d3, plotly, spreadsheets).
2026-07-10