python常用备忘

gistfile1.txt

tuple to dict:

data = [(u'030944', u'20091123', 10, 30, 0), (u'030944', u'20100226', 10, 15, 0)]
fields = ['id', 'date', 'hour', 'minute', 'interval']
dicts = [dict(zip(fields, d)) for d in data]

嵌套字典：
class Vividict(dict):
    def __missing__(self, key):
        value = self[key] = type(self)()
        return value

pz = Vividict()