获取TypeError:unhashable type:'dict'当我运行下面的代码时，请解释一下我可能做错了什么

Question

theBoard = {}
theBoard.setdefault({1: '1', 2: '2', 3: '3',
                     4: '4', 5: '5', 6: '6',
                     7: '7', 8: '8', 9: '9'})

Answer 1

theBoard = {}
theBoard.update({1: '1', 2: '2', 3: '3',
                     4: '4', 5: '5', 6: '6',
                     7: '7', 8: '8', 9: '9'})