Python案例-开发之路-有序字典

#!/usr/bin/env python# -- coding = 'utf-8' --# Author Allen Lee# Python Version 3.5.1# OS Windows 7#有序化字典class Mydict(dict):def __init__(self):self.li = []super(Mydict,self)

白金牧场

699人浏览 · 2016-07-01 22:57:06

白金牧场 · 2016-07-01 22:57:06 发布

#!/usr/bin/env python
# -- coding = 'utf-8' --
# Author Allen Lee
# Python Version 3.5.1
# OS Windows 7
#有序化字典
class Mydict(dict):

    def __init__(self):
        self.li = []
        super(Mydict,self).__init__()

    def __setitem__(self, key, value):
        self.li.append(key)
        super(Mydict,self).__setitem__(key,value)

    def __str__(self):
        temp_list = []
        for key in self.li:
            value = self.get(key)
            temp_list.append("'%s':%s" % (key,value,))
        temp_str = "{" + ",".join(temp_list) + "}"
        return temp_str

obj = Mydict()
obj['k1'] = 123
obj['k2'] = 424
print(obj)