Path: csiph.com!fu-berlin.de!uni-berlin.de!not-for-mail
From: Peter Otten <__peter__@web.de>
Newsgroups: comp.lang.python
Subject: Re: what is wrong with this property setter
Date: Thu, 09 Jun 2016 11:49:57 +0200
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Xref: csiph.com comp.lang.python:109718

Nagy László Zsolt wrote:

> 
>>> Yes, and more. That property will also have a get method! Is it
>>> intentional?
>> It's a logical effect of how the setter() method works. The above is
>> syntactic sugar for
>>
>> def set_parent(...):
>>    ...
>> set_parent = parent.setter(set_parent)
>>
>> and parent.setter() creates a new property basically like this
>>
>> def setter(self, fset):
>>     return property(self.fget, fset, ...)
> This I could not find, because property is a built-in. But I believe
> you. :-)

If you can read C:

https://hg.python.org/cpython/file/tip/Objects/descrobject.c#l1183
https://hg.python.org/cpython/file/tip/Objects/descrobject.c#l1265