I agree, you could learn so much just looking at how he defines functions.. see this for example: def pdist(counter): "Make a probability distribut

I agree, you could learn so much just looking at how he defines functions.. see this for example: def pdist(counter): "Make a probability distribution, given evidence from a Counter." N = sum(counter.values()) return lambda x: counter[x]/N P = pdist(COUNTS) from http://nbviewer.jupyter.org/url/norvig.com/ipython/How%20to%20Do%20Things%20with%20Words.ipynb#%284%29-Theory:-From-Counts-to-Probabilities-of-Word-Sequences http://nbviewer.jupyter.org/url/norvig.com/ipython/How%20to%...