English 中文(简体)
Python 属性未设置
原标题:Python property does not set

这是代码:

def Property(func):
     return property(**func())

class A:
     def __init__(self, name):
          self._name = name

     @Property
     def name():
          doc =  A  s name 

          def fget(self):
               return self._name

          def fset(self, val):
               self._name = val

          fdel = None

          print locals()
          return locals()

a = A( John )
print a.name
print a._name
a.name =  Bob 
print a.name
print a._name

以上产出如下:

{ doc :  As name ,  fset : <function fset at 0x10b68e578>,  fdel : None,  fget : <function fget at 0x10b68ec08>}
John
John
Bob
John

代码为"http://adam.gomaa.us/blog/2008/aug/11/the-python-property-buildingin/"rel="noreferrer"。

问题:怎么了?这应该很简单,但我找不到。

" 强度 " 注:

提前感谢。

最佳回答
问题回答

(Posted above) Use this format: http://docs.python.org/library/functions.html#property

class C(object):
    def __init__(self):
        self._name = "nameless"

    @property
    def name(self):
        """I m the  name  property."""
        return self._name

    @name.setter
    def name(self, value):
        self._name = value

    @name.deleter
    def name(self):
        del self._name




相关问题
Can Django models use MySQL functions?

Is there a way to force Django models to pass a field to a MySQL function every time the model data is read or loaded? To clarify what I mean in SQL, I want the Django model to produce something like ...

An enterprise scheduler for python (like quartz)

I am looking for an enterprise tasks scheduler for python, like quartz is for Java. Requirements: Persistent: if the process restarts or the machine restarts, then all the jobs must stay there and ...

How to remove unique, then duplicate dictionaries in a list?

Given the following list that contains some duplicate and some unique dictionaries, what is the best method to remove unique dictionaries first, then reduce the duplicate dictionaries to single ...

What is suggested seed value to use with random.seed()?

Simple enough question: I m using python random module to generate random integers. I want to know what is the suggested value to use with the random.seed() function? Currently I am letting this ...

How can I make the PyDev editor selectively ignore errors?

I m using PyDev under Eclipse to write some Jython code. I ve got numerous instances where I need to do something like this: import com.work.project.component.client.Interface.ISubInterface as ...

How do I profile `paster serve` s startup time?

Python s paster serve app.ini is taking longer than I would like to be ready for the first request. I know how to profile requests with middleware, but how do I profile the initialization time? I ...

Pragmatically adding give-aways/freebies to an online store

Our business currently has an online store and recently we ve been offering free specials to our customers. Right now, we simply display the special and give the buyer a notice stating we will add the ...

Converting Dictionary to List? [duplicate]

I m trying to convert a Python dictionary into a Python list, in order to perform some calculations. #My dictionary dict = {} dict[ Capital ]="London" dict[ Food ]="Fish&Chips" dict[ 2012 ]="...