Once I type " import matplotlib.pyplot as plt" and run it, jupyter always returns： ＂Matplotlib is building the font cache; this may take a moment.＂ ＃Then the return messages will end up as ： ...

Add atomic images to a pyplot figure. by Andrew Peterson. It can be nice to add atomic images directly to a figure made in pyplot (i.e., matplotlib). This is pretty simple to do using the tools of ASE ...