sort a dictionary by inner key python

Question

I have a 3 dimensional dictionary

 d = ({k1:{k2:{k3:v}}}
       and many more such keys....)

Now, I want to sort this dictionary by k3? What is the best way to do this?

Answer 1

 sorted_keys = sorted(d.keys(),key=lambda x:d[x]['key2']['key3'])

将为您排序键...（因为字典按定义未排序）