There are many visualisation libraries in python out there and altair offers some original features. It offers a wide variety of charts, a grammar-like api, loads of interactivity features and the option of exporting directly to the browser.
The final plot is created via;
days = ['Mon', 'Tues', 'Wed', 'Thurs', 'Fri', 'Sat', 'Sun'] (alt.Chart(plot_df) .mark_point() .encode(x='yday', y='births', color=alt.Color('wday', sort=days)) .properties(width=600, height=250) .interactive())
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