http://nbviewer.ipython.org/url/norvig.com/ipython/xkcd1313.ipynb "/bu|[rn]t|[coy]e|[mtg]a|j|iso|n[hl]|[ae]d|lev|sh|[lnd]i|[po]o|ls/ matches the last names of elected US presidents but not their opponents." Click to view the original at nbviewer.ipython.org
