series.py 文件源码

def __getitem__(self, key):
        """

        """
        try:
            return self._get_val_at(self.index.get_loc(key))

        except KeyError:
            if isinstance(key, (int, np.integer)):
                return self._get_val_at(key)
            raise Exception('Requested index not in this series!')

        except TypeError:
            # Could not hash item, must be array-like?
            pass

        # is there a case where this would NOT be an ndarray?
        # need to find an example, I took out the case for now

        key = _values_from_object(key)
        dataSlice = self.values[key]
        new_index = Index(self.index.view(ndarray)[key])
        return self._constructor(dataSlice, index=new_index).__finalize__(self)