code: def ipop(self, index):
          '''Pop a value at *index* from the :class:`TS`. Return ``None`` if
  index is not out of bound.'''
          backend = self.backend
          res = backend.structure(self).ipop(index)
          return backend.execute(res,
                                 lambda r: self._load_get_data(r, index, None)f ipop(self, index):
          '''Pop a value at *index* from the :class:`TS`. Return ``None`` if
  index is not out of bound.'''
          backend = self.backend
          res = backend.structure(self).ipop(index)
          return backend.execute(res,
                                 lambda r: self._load_get_data(r, index, None))
docs: Pop a value at *index* from the :class:`TS`. Return ``None`` if
  index is not out of bound.