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52 json ToDictMixin: to_dict: ._traverse_dict. _traverse_dict instance_dict: output key value instance_dict.: outputkey ._traversekey value output _traverse key value: value ToDictMixin: value. value : ._traverse_dictvalue value : ._traversekey i i value value : ._traverse_dictvalue. : value JsonMixin: from_jsoncls data: kwargs json.data cls**kwargs to_json: json.. BinaryTreeToDictMixin JsonMixin: value left right: . value . left . right tree BinaryTree BinaryTree BinaryTree tree. tree. 原文链接：https://www.f2er.com/note/421958.html
