Building a Small Dashboard
A dashboard is several charts arranged so that one look answers several questions. Plan the grid first: decide which question each panel answers, give each a clear title, share axes where the unit is the same, and keep the colours consistent.
plt.subplots(2, 2, figsize=(11, 7)) gives four panels, indexed axs[0][0], axs[0][1], axs[1][0], axs[1][1]. Finish with fig.suptitle(...) for an overall headline and fig.tight_layout() to space the panels.
What does `fig.tight_layout()` do?
Make a 2 by 2 figure, draw a bar chart in the top-left panel, and print the number of axes and the number of bars on one line separated by a space (use len(fig.axes) and len(axs[0][0].patches)).
Finish the quick check (and any code exercise) to complete this lesson, or mark it done yourself.
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