python之OrderedDict类

 # OrderedDict类使用举例
 # OrderedDict类的使用与字典相似，不同的是OrderedDict类会记录键值对的添加顺序
 from collections import OrderedDict

 hoppys = OrderedDict()
 hoppys['mike'] = 'swim'
 hoppys['tom'] = 'reading'
 hoppys['lily'] = 'singing'

 print(hoppys)
 print('Tom的爱好是：' + hoppys['tom'])

 for name, hoppy in hoppys.items():
     print('-', name.title(), hoppy)

运行结果：

 OrderedDict([('mike', 'swim'), ('tom', 'reading'), ('lily', 'singing')])
 Tom的爱好是：reading
 - Mike swim
 - Tom reading
 - Lily singing