<html><head><meta http-equiv="Content-Type" content="text/html charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><div><div>On 25 maj 2013, at 15:45, Antoine Pitrou <<a href="mailto:solipsis@pitrou.net">solipsis@pitrou.net</a>> wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite">On Sat, 25 May 2013 15:26:58 +0200<br>Antoine Pitrou <<a href="mailto:solipsis@pitrou.net">solipsis@pitrou.net</a>> wrote:<br><br><blockquote type="cite">On Sat, 25 May 2013 06:23:56 -0700<br>Eli Bendersky <<a href="mailto:eliben@gmail.com">eliben@gmail.com</a>> wrote:<br><blockquote type="cite">On Sat, May 25, 2013 at 6:18 AM, Antoine Pitrou <<a href="mailto:solipsis@pitrou.net">solipsis@pitrou.net</a>> wrote:<br><br><blockquote type="cite"><br>Hello,<br><br>In <a href="http://bugs.python.org/issue17936">http://bugs.python.org/issue17936</a>, I proposed making tp_subclasses<br>(the internal container implementing object.__subclasses__) a dict.<br>This would make the return order of __subclasses__ completely<br>undefined, while it is right now slightly predictable. I have never seen<br>__subclasses__ actually used in production code, so I'm wondering<br>whether someone might be affected by such a change.<br><br>Regards<br><br></blockquote><br>Personally I never used it, but it's now explicitly documented as returning<br>a list. Not sure what's the right thing to do here, but perhaps returning<br>an OrderedDict can eliminate the order problem?<br></blockquote><br>It would still return a list.<br></blockquote><br>I guess I should explain myself more clearly: __subclasses__() already<br>computes its result on-the-fly (it must weed out dead weakrefs) (*). So<br>the visible behaviour of __subclasses__ wouldn't change, except for<br>ordering.<br></blockquote><div><br></div><div>+1</div><div><br></div><div>Makes sense to me. As currently defined, you cannot rely on the item order anyway.</div><div><br></div></div><div apple-content-edited="true">
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