sort a list of dictionary of dictionary in python

Question

I just want to sort by first_name this list in python

list = [ { "profile" :  { "first_name" : "a", "last_name" : "b" } } ,
         { "profile" :  { "first_name" : "c", "last_name" : "d" } } ,
         { "profile" :  { "first_name" : "e", "last_name" : "f" } } ]

Answer 1

这应该这样做：

>>> sorted(lst, key=lambda x: x['profile']['first_name'])

Answer 2

To sort the list itself, use:

lst.sort(key=lambda x: x['profile']['first_name'])

To keep lst unsorted and return a sorted list use:

sorted(lst, key=lambda x: x['profile']['first_name'])