On 2/10/06, john peter <[EMAIL PROTECTED]> wrote:
> while reading the lib manual, i came across mentions of read-only
> attributes.
> for example, a method has a read-only attribute (called _im_self ?) for
> binding
> a class instance to the method. is such a facility available to custom
> application
> code? if so, what do i have to do if i want my application code to have
> read-only
> attributes?
>
>
I think you may consider property() built-in function:
property( [fget[, fset[, fdel[, doc]]]])
Return a property attribute for new-style classes (classes that derive
from object).
fget is a function for getting an attribute value, likewise fset is a
function for setting, and fdel a function for del'ing, an attribute.
Typical use is to define a managed attribute x:
class C(object):
def __init__(self): self.__x = None
def getx(self): return self.__x
def setx(self, value): self.__x = value
def delx(self): del self.__x
x = property(getx, setx, delx, "I'm the 'x' property.")
New in version 2.2.
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