[issue29012] __bases__ is a tuple (possibly empty or a singleton)
New submission from Jim Fasarakis-Hilliard: The following statement is in the Language Reference for Custom classes:
__bases__ is a tuple (possibly empty or a singleton) containing the base classes
AFAIK, ``object.__bases__`` is the only object for which ``__bases__`` is empty and it isn't a *custom* class. Attempts to create a class and assign __bases__ to an empty tuple is checked to enforce inheritance from ``object``. This *seems* to be something that slipped through when the docs were created for Python 3.0? I'm curious to see if this can actually be empty, if not, attached patch removes ''empty'' from the sentence. ---------- assignee: docs@python components: Documentation files: fixbasesdoc.patch keywords: patch messages: 283595 nosy: Jim Fasarakis-Hilliard, docs@python priority: normal severity: normal status: open title: __bases__ is a tuple (possibly empty or a singleton) versions: Python 3.3, Python 3.4, Python 3.5, Python 3.6, Python 3.7 Added file: http://bugs.python.org/file45962/fixbasesdoc.patch _______________________________________ Python tracker <report@bugs.python.org> <http://bugs.python.org/issue29012> _______________________________________
R. David Murray added the comment: Most likely it just slipped through. In 2.7 the section is just called 'classes', not 'custom classes', and covered both classic classes and the new style classes that are all that python3 has. ---------- nosy: +r.david.murray _______________________________________ Python tracker <report@bugs.python.org> <http://bugs.python.org/issue29012> _______________________________________
Roundup Robot added the comment: New changeset 721df314d45a by Berker Peksag in branch '3.5': Issue #29012: Remove outdated information about __bases__ https://hg.python.org/cpython/rev/721df314d45a New changeset 019125fb6d66 by Berker Peksag in branch '3.6': Issue #29012: Merge from 3.5 https://hg.python.org/cpython/rev/019125fb6d66 New changeset 454426dbff83 by Berker Peksag in branch 'default': Issue #29012: Merge from 3.6 https://hg.python.org/cpython/rev/454426dbff83 ---------- nosy: +python-dev _______________________________________ Python tracker <report@bugs.python.org> <http://bugs.python.org/issue29012> _______________________________________
Berker Peksag added the comment: Thanks, Jim. ---------- nosy: +berker.peksag resolution: -> fixed stage: -> resolved status: open -> closed type: -> behavior versions: -Python 3.3, Python 3.4 _______________________________________ Python tracker <report@bugs.python.org> <http://bugs.python.org/issue29012> _______________________________________
Serhiy Storchaka added the comment: I think "possible a singleton" can be removed too. It doesn't add any useful information, any tuple is possible a singleton. ---------- nosy: +serhiy.storchaka _______________________________________ Python tracker <report@bugs.python.org> <http://bugs.python.org/issue29012> _______________________________________
Jim Fasarakis-Hilliard added the comment: Yes, I agree with that it seems redundant after the change. I'm attaching another small patch based on the committed one to trim that off. ---------- Added file: http://bugs.python.org/file46117/fixbasesdoc2.patch _______________________________________ Python tracker <report@bugs.python.org> <http://bugs.python.org/issue29012> _______________________________________
Roundup Robot added the comment: New changeset 1aba7cbbcc27 by Berker Peksag in branch '3.5': Issue #29012: Remove another outdated information https://hg.python.org/cpython/rev/1aba7cbbcc27 New changeset 7ef5b02b228a by Berker Peksag in branch '3.6': Issue #29012: Merge from 3.5 https://hg.python.org/cpython/rev/7ef5b02b228a New changeset f05165a9cae6 by Berker Peksag in branch 'default': Issue #29012: Merge from 3.6 https://hg.python.org/cpython/rev/f05165a9cae6 ---------- _______________________________________ Python tracker <report@bugs.python.org> <http://bugs.python.org/issue29012> _______________________________________
Berker Peksag added the comment: Good point, Serhiy. Thanks for the patch, Jim. I've now removed the "possible a singleton" part. ---------- _______________________________________ Python tracker <report@bugs.python.org> <http://bugs.python.org/issue29012> _______________________________________
participants (5)
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Berker Peksag -
Jim Fasarakis-Hilliard
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R. David Murray
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Roundup Robot
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Serhiy Storchaka