python的OOP问题 [英] python's OOP question
问题描述
有一个程序,它的结果是意外的aaa,我希望它是
预期的aaa。如何使其工作?
There''s a program, it''s result is "unexpected aaa", i want it to be
"expected aaa". how to make it work?
推荐答案
neoedmund写道:
neoedmund wrote:
有一个程序,它的结果是意外的aaa,我希望它是
预期的aaa。如何使其工作?
There''s a program, it''s result is "unexpected aaa", i want it to be
"expected aaa". how to make it work?
" neoedmund" < ne ******* @ gmail.comwrites:
"neoedmund" <ne*******@gmail.comwrites:
有一个程序,它的结果是意外的aaa,我希望它是
预期的aaa。如何使它工作?
[代码]
类C1(对象):
def v(自我,o):
返回预期+ o
类C2(对象):
def v( self,o):
返回意外+ o
def m(个体经营):
print self.v(" aaa)
C3级(对象):
def nothing(self):
pass
def test1():
o = C3()
setattr(o," m",C2()。m)
setattr(o," v",C1()。v)
om()
There''s a program, it''s result is "unexpected aaa", i want it to be
"expected aaa". how to make it work?
[code]
class C1(object):
def v(self, o):
return "expected "+o
class C2(object):
def v(self, o):
return "unexpected "+o
def m(self):
print self.v("aaa")
class C3(object):
def nothing(self):
pass
def test1():
o = C3()
setattr(o,"m",C2().m)
setattr(o,"v",C1().v)
o.m()
设置属性对象外部与
制作该对象的绑定方法不同。
在这种情况下,''o.m''是一个C2实例的绑定方法,并且没有知道C1的知识。 ''o.v''是C1实例的绑定方法,并且没有C2的b
知识。他们都不知道C3。
你想要实现的是什么?
-
\Unix是一个操作系统,OS / 2是操作系统的一半,|
` \ Windows是一个shell,而DOS是一个启动分区病毒。 - |
_o__)Peter H. Coffin |
Ben Finney
Setting attributes on an object externally isn''t the same thing as
making bound methods of that object.
In this case, ''o.m'' is a bound method of a C2 instance, and has no
knowledge of C1. ''o.v'' is a bound method of a C1 instance, and has no
knowledge of C2. Neither of them has any knowledge of C3.
What is it you''re trying to achieve?
--
\ "Unix is an operating system, OS/2 is half an operating system, |
`\ Windows is a shell, and DOS is a boot partition virus." -- |
_o__) Peter H. Coffin |
Ben Finney
谢谢,凯。
但我需要一个动态的办法。假设我有一个现有的类,并从其他类中添加一些
方法。
Kay Schluehr写道:
thank you, Kay.
But i need a "dynamic" way. Say i have a existing class, and add some
method from other class into it.
Kay Schluehr wrote:
neoedmund写道:
neoedmund wrote:
有一个程序,它的结果是意外的aaa,我希望它是
预期aaa。如何使其工作?
There''s a program, it''s result is "unexpected aaa", i want it to be
"expected aaa". how to make it work?
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