@cassiopeia.type.core.common.lazyproperty
    def masteries(self):
        masteries = []
        ranks = []
        for mastery in self.data.masteries.items():
            masteries.append(mastery[0])
            ranks.append(mastery[1])
        return dict(zip(cassiopeia.riotapi.get_masteries(masteries), ranks))
Make a sqlite database for fast retrieval of features.
dataset/ETHPy150Open meraki-analytics/cassiopeia/cassiopeia/type/core/summoner.py/MasteryPage.masteries--crossover with--dataset/ETHPy150Open tanghaibao/jcvi/formats/gff.py/make_index