如果您有以下格式的字典:
{ 'KEY1':{'name':'foo','data':1351,'completed':100}, 'KEY2':{'name':'bar','data':1541,'completed':12}, 'KEY3':{'name':'baz','data':58413,'completed':18} }
而且,您想要按升序对每个条目中完成的键进行排序,则可以将排序函数与lambda一起使用,该lambda指定用于对数据进行排序的键。例如,
my_collection = { 'KEY1':{'name':'foo','data':1351,'completed':100}, 'KEY2':{'name':'bar','data':1541,'completed':12}, 'KEY3':{'name':'baz','data':58413,'completed':18} } sorted_keys = sorted(my_collection, key=lambda x: (my_collection[x]['completed'])) print(sorted_keys)
这将给出输出:
['KEY2', 'KEY3', 'KEY1']