最后三行有什么问题？
class FooClass(object):
pass
bar1 = object()
bar2 = object()
bar3 = object()
foo1 = FooClass()
foo2 = FooClass()
foo3 = FooClass()
object.__setattr__(foo1,'attribute','Hi')
foo2.__setattr__('attribute','Hi')
foo3.attribute = 'Hi'
object.__setattr__(bar1,'attribute','Hi')
bar2.attribute = 'Hi'
bar3.attribute = 'Hi'
我需要一个具有单个属性(如 foo)的对象，我应该为它定义一个类(如 FooClass)吗？
请您参考如下方法:
object 是 built-in type ，因此您不能覆盖其实例的属性和方法。
也许您只想要一个 dictionary或 collections.NamedTuples :
>>> d = dict(foo=42)
{'foo': 42}
>>> d["foo"]
42
>>> from collections import namedtuple
>>> Point = namedtuple('Point', ['x', 'y'], verbose=True)
>>> p = Point(11, y=22) # instantiate with positional or keyword arguments
>>> p[0] + p[1] # indexable like the plain tuple (11, 22) 33
>>> x, y = p # unpack like a regular tuple
>>> x, y (11, 22)
>>> p.x + p.y # fields also accessible by name 33
>>> p # readable __repr__ with a name=value style Point(x=11, y=22)
