[Python-Dev] PEP 318 - generality of list; restrictions on
elements
Phillip J. Eby
pje at telecommunity.com
Wed Mar 10 11:10:21 EST 2004
At 10:31 AM 3/10/04 -0500, Aahz wrote:
>Maybe I'm misunderstanding something. I thought that a property contains
>a get descriptor, which makes it a kind of callable. Read-only
>properties contain a set descriptor that either does nothing or raises an
>exception. That doesn't affect whether the property is classified as a
>callable.
Properties are not callable.
Python 2.2.2 (#37, Oct 14 2002, 17:02:34) [MSC 32 bit (Intel)] on win32
Type "copyright", "credits" or "license" for more information.
IDLE 0.8 -- press F1 for help
>>> x=property()
>>> x()
Traceback (most recent call last):
File "<pyshell#1>", line 1, in ?
x()
TypeError: 'property' object is not callable
>>> callable(property())
0
>>> callable(property(lambda x:None))
0
>>>
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