#!/usr/bin/env python3

import pickle
import pprint

with open('feats.pickle', 'rb') as f:
    allfeats = pickle.load(f)

prefeats = {}

for f in allfeats:
    if 'feat' in f['prereqs']:
        fs = f['prereqs']['feat']
        if isinstance(fs, list):
            for pf in fs:
                if pf in prefeats:
                    prefeats[pf] += 1
                else:
                    prefeats[pf] = 1
        else:
            if fs in prefeats:
                prefeats[fs] += 1
            else:
                prefeats[fs] = 1

outfeats = sorted(prefeats, key=lambda x: prefeats[x])

for of in outfeats:
    print("%s, %s" % (of, prefeats[of]))