python：TypeError:‘dict_keys‘objectdoesnotsupportindexing

 1. 报错&＃xff1a;python&＃xff1a;TypeError: &＃39;dict_keys&＃39; object does not support indexing

2. 解决&＃xff1a;

https://blog.csdn.net/a070220106/article/details/9089379  TypeError: &＃39;dict_keys&＃39; object does not support indexing

https://blog.csdn.net/shuiyixin/article/details/87910896  Python报错&＃xff1a;TypeError: &＃39;dict_keys&＃39; object does not support indexing&＃xff08;机器学习实战treePlotter代码&＃xff09;解决方案

由于python3改变了dict.keys,返回的是dict_keys对象,支持iterable 但不支持indexable&＃xff0c;我们可以将其明确的转化成list&＃xff1a;

将以下代码&＃xff1a;

 firstStr &＃61; inputTree.keys()[0]

改成&＃xff1a;

firstStr &＃61; list(inputTree.keys())[0]

即可。