type和isinstance

1 >>> type(123)
2 <type ‘int‘>
3 >>> type(‘str‘)
4 <type ‘str‘>
5 >>> type(None)
6 <type ‘NoneType‘>

1 >>> type(abs)
2 <type ‘builtin_function_or_method‘>
3 >>> type(a)
4 <class ‘__main__.Animal‘>

1 >>> import types
2 >>> type(‘abc‘)==types.StringType
3 True
4 >>> type(u‘abc‘)==types.UnicodeType
5 True
6 >>> type([])==types.ListType
7 True
8 >>> type(str)==types.TypeType
9 True

1 >>> isinstance(‘a‘, str)
2 True
3 >>> isinstance(‘a‘, (str, unicode))
4 True
5 >>> isinstance(u‘a‘, (str, unicode))
6 True

1 >>> a = Animal()
2 >>> d = Dog()
3 >>> h = Husky()
4 
5 >>> isinstance(h, Husky)
6 True
7 >>> isinstance(h, Dog)
8 True