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inspect.isdatadescriptor false negative #76581
Description
| BPO | 32400 |
|---|---|
| Nosy | @serhiy-storchaka, @aaronchall, @corona10, @chnlior |
| Superseder |
Note: these values reflect the state of the issue at the time it was migrated and might not reflect the current state.
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GitHub fields:
assignee = None
closed_at = <Date 2018-06-10.11:24:32.055>
created_at = <Date 2017-12-21.18:57:04.972>
labels = ['type-bug', 'library', 'docs']
title = 'inspect.isdatadescriptor false negative'
updated_at = <Date 2018-06-10.11:24:32.054>
user = 'https://github.com/chnlior'bugs.python.org fields:
activity = <Date 2018-06-10.11:24:32.054>
actor = 'berker.peksag'
assignee = 'docs@python'
closed = True
closed_date = <Date 2018-06-10.11:24:32.055>
closer = 'berker.peksag'
components = ['Documentation', 'Library (Lib)']
creation = <Date 2017-12-21.18:57:04.972>
creator = 'chnlior'
dependencies = []
files = []
hgrepos = []
issue_num = 32400
keywords = ['patch']
message_count = 2.0
messages = ['308895', '319204']
nosy_count = 5.0
nosy_names = ['docs@python', 'serhiy.storchaka', 'Aaron Hall', 'corona10', 'chnlior']
pr_nums = []
priority = 'normal'
resolution = 'duplicate'
stage = 'resolved'
status = 'closed'
superseder = '26103'
type = 'behavior'
url = 'https://bugs.python.org/issue32400'
versions = ['Python 3.6']
Activity
chnlior commentedon Dec 21, 2017
According to the c code in Include/descrobject.h
and according to the "data model" chapter,
a data descriptor is an object who has __set__ and /or __delete__.
the "inspect.isdatadescriptor" checks for existence of __get__ and __set__ which IMHO is wrong. an object with __set__/delete only will return falsely False (should be True).
This is related to @serhiy Storchaka comment in bpo-26103 opened by @aaron Hall.
[-]inspect.isdatadescriptor fasle negative[/-][+]inspect.isdatadescriptor false negative[/+]corona10 commentedon Jun 10, 2018
@serhiy Storchaka
This issue can be closed due to PR 1959