001、python报错
>>> dict1 = {"aa":300, "bb":500, "cc":400, "dd":700}
>>> dict1
{'aa': 300, 'bb': 500, 'cc': 400, 'dd': 700}
>>> dict1.keys()
dict_keys(['aa', 'bb', 'cc', 'dd'])
>>> dict1.keys()[3]
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
TypeError: 'dict_keys' object is not subscriptable
002、报错原因 ：python3不支持该语法
003、解决方法
>>> dict1 = {"aa":300, "bb":500, "cc":400, "dd":700}
>>> dict1
{'aa': 300, 'bb': 500, 'cc': 400, 'dd': 700}
>>> dict1.keys()
dict_keys(['aa', 'bb', 'cc', 'dd'])
>>> dict1.keys()[2]
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
TypeError: 'dict_keys' object is not subscriptable
>>> list(dict1.keys())[2] ## 增加list函数
'cc'
标签：aa,TypeError,dict1,bb,keys,cc,dict From： https://www.cnblogs.com/liujiaxin2018/p/17451502.html