10.6 Matplotlib

Matplotlib is the classic Python library for creating charts and graphs from data. With it you can draw line charts, bar charts, scatter plots, histograms, and more, turning rows of numbers into a picture that is easy to understand.

Visualizing data helps you spot patterns and explain results to others. For instance, plotting Ethiopia's monthly coffee export figures as a line chart instantly shows whether sales are rising, falling, or seasonal — something hard to see in a table of raw numbers.