python通过对字典的排序,对json字段进行排序的实例

Z时代
2024-01-10
分类：综合

如下所示：


dic = dict()
dic['a'] = 1
dic['b'] = 2
dic['c'] = 3
print(dic.items())
import json
jsons = json.dumps(dic)
print(jsons)

结果：

dic is: dict_items([('c', 3), ('b', 2), ('a', 1)])
jsons: {"c": 3, "b": 2, "a": 1}

通过使用collecions,进行排序。collections是一个python的内建模块。


import collections
dic = collections.OrderedDict()
# dic = dict()
dic['a'] = 1
dic['b'] = 2
dic['c'] = 3
print("dic is:",dic.items())
import json
jsons = json.dumps(dic)
print("jsons:",jsons)

结果：

dic is: odict_items([('a', 1), ('b', 2), ('c', 3)])
jsons: {"a": 1, "b": 2, "c": 3}

补充拓展：对JSON集合某个键进行升序/降序排列

我就废话不多说了，直接上代码吧


$(document).ready(function () { 
  //对json进行降序排序函数 
  var colId="age" 
  var desc = function(x,y) 
  { 
    return (x[colId] < y[colId]) ? 1 : -1 
  } 
  //对json进行升序排序函数 
  var asc = function(x,y) 
  { 
    return (x[colId] > y[colId]) ? 1 : -1 
  } 
  var arr2 = [ 
    {name:"kitty", age:12}, 
    {name:"sonny", age:9}, 
    {name:"jake", age:13}, 
    {name:"fun", age:24} 
  ]; 
  document.writeln("按age进行升序排序：<br>"); 
  arr2.sort(asc); //升序排序 
  document.writeln(JSON.stringify(arr2)); 
  document.writeln("<br>按age进行降序排序：<br>"); 
  arr2.sort(desc); //降序排序 
  document.writeln(JSON.stringify(arr2)); 
});