python 提示錯誤AttributeError: type object 'str' has no attribute '_name_'

在作《Machine Learning in Action》書中的第三章繪製樹形圖時遇到了這個問題AttributeError: type object 'str' has no attribute '_name_'python 很明顯是if type(secondDict[key])._name_  == ‘dict’:這一句有問題，在python3中並無type(secondDict[key]

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