怎样让字典按照keys 值排序

步骤一：对字典进行items方法：

>>>addict = {'a':3,'b':1,'c':2}

>>>addict.items()

>>> [('a',3),('b',1),('c',2)]

步骤二：字典的operator方法:

>>>import operator

>>>aim_adict = sorted(addict.items(),key = operator.itemgetter(1),reverse = True)

>>>aim_adict = [('a',3),('c',2),('b',1)]