Python collections.OrderedDict解决dict元素顺序问题详解编程语言

 1 #coding=utf-8 
 2  
 3 import json 
 4 import collections 
 5  
 6 my_dict = {} 
 7 my_list = ["测试", "1324", "r4ge5"] 
 8  
 9 for i in my_list: 
10     my_dict[i] = my_list[my_list.index(i)] 
11  
12 print "str1原串:" 
13 str1 = json.dumps(my_dict, ensure_ascii=False) 
14 print str1 
15  
16 print "对str1字符串进行loads后的结果:" 
17 data_js = json.loads(str1) 
18 print json.dumps(data_js, ensure_ascii=False).encode("utf8") 
19  
20 print "对str1字符串进行loads后的结果(使用OrderedDict):" 
21 data_js = json.loads(str1, object_pairs_hook=collections.OrderedDict) 
22 print json.dumps(data_js, ensure_ascii=False).encode("utf8")

str1原串: 
{"测试": "测试", "r4ge5": "r4ge5", "1324": "1324"} 
对str1字符串进行loads后的结果: 
{"r4ge5": "r4ge5", "1324": "1324", "测试": "测试"} 
对str1字符串进行loads后的结果(使用OrderedDict): 
{"测试": "测试", "r4ge5": "r4ge5", "1324": "1324"}