def tell(self):
    raise NotImplementedError()
Returns a list of the last value on every key list.
dataset/ETHPy150Open AppScale/appscale/AppServer/google/appengine/api/files/records.py/FileReader.tell--crossover with--dataset/ETHPy150Open kdart/pycopia/aid/pycopia/dictlib.py/MultiValueDict.values