Using emoji in Matplotlib
tl;dr Download the Symbola font and install it; using, for instance, the included Font Book application on macOS. Trash Matplotlib’s font cache file (probably located at ~/.matplotlib/fontList.py3k.cache, again for macOS). Start your Jupyter Notebook. The font should be available and if it is, it’ll be used to render the final graph. If not, the default font will be used and all of those silly emoji will show up as empty rectangles of sadness. ...