def popitem(self, i=-1):
        """
        Delete and return an item specified by index, not a random one as in
        dict. The index is -1 by default (the last item).

        >>> d = OrderedDict(((1, 3), (3, 2), (2, 1)))
        >>> d.popitem()
        (2, 1)
        >>> d
        OrderedDict([(1, 3), (3, 2)])
        >>> d.popitem(0)
        (1, 3)
        >>> OrderedDict().popitem()
        Traceback (most recent call last):
        KeyError: 'popitem(): dictionary is empty'
        >>> d.popitem(2)
        Traceback (most recent call last):
        IndexError: popitem(): index 2 not valid
        """
        if not self._sequence:
            raise KeyError('popitem(): dictionary is empty')
        try:
            key = self._sequence[i]
        except __HOLE__:
            raise IndexError('popitem(): index %s not valid' % i)
        return (key, self.pop(key))
dataset/ETHPy150Open editorconfig/editorconfig-vim/plugin/editorconfig-core-py/editorconfig/odict.py/OrderedDict.popitem