Matplotlib has a number of built-in colormaps accessible via matplotlib.cm.get_cmap. There are also external libraries like [palettable] and [colorcet] that have many extra colormaps. Here we briefly ...

On read-only colormaps The registry colormap access already returns copies of the colormaps and by that implements the change to get_cmap, which is scheduled to take effect in 3.6 (#19766). He can be ...