自定义排序Python字典

Python中的字典是无序的。您可以将所需的结果作为

list

>>> d = {'10': -10, 'ZT21': 14, 'WX21': 12, '2': 15, '5': -3, 'UM': -25}>>> keyorder = ['ZT21', '10', 'WX21', 'UM', '5', '2']>>> sorted(d.items(), key=lambda i:keyorder.index(i[0]))[('ZT21', 14), ('10', -10), ('WX21', 12), ('UM', -25), ('5', -3), ('2', 15)]

或作为OrderedDict

>>> from collections import OrderedDict>>> OrderedDict(sorted(d.items(), key=lambda i:keyorder.index(i[0])))OrderedDict([('ZT21', 14), ('10', -10), ('WX21', 12), ('UM', -25), ('5', -3), ('2', 15)])

如果您要执行许多 *** 作，则将a

dict

>>> keyorder = {k:v for v,k in enumerate(['ZT21', '10', 'WX21', 'UM', '5', '2'])}>>> OrderedDict(sorted(d.items(), key=lambda i:keyorder.get(i[0])))OrderedDict([('ZT21', 14), ('10', -10), ('WX21', 12), ('UM', -25), ('5', -3), ('2', 15)])