def handle(self):
    raise NotImplementedError()
OD.fromkeys(S[, v]) -> New ordered dictionary with keys from S and
dataset/ETHPy150Open livid/v2ex/mapreduce/base_handler.py/JsonHandler.handle--crossover with--dataset/ETHPy150Open PythonCharmers/python-future/docs/3rd-party-py3k-compat-code/pandas_py3k.py/_OrderedDict.fromkeys