code: def pop(self, key):
          
  
          try:
              self.result_cache.pop(repr(key))
  
          except KeyError:
              pass
  
          return DataArray.pop(self, key)
docs: Pops dict_grid with undo and redo support
  
          Parameters
          ----------
          key: 3-tuple of Integer
          \tCell key that shall be popped