New submission from Terry J. Reedy: More than once, people have noted on python-list that not all built-in classes can be subclassed and that there seems to be no way to find out which, other than to try each. (Today, Daniel Urban pointed out the CPython-specific 'xx.__flags__ & (1 << 10)'.) If the specifics are a Python feature, rather than CPython specific, I think they should be given in the doc.
There is a recent issue, which I cannot find, about re-organizing the Library built-in functions chapter by groups. If this is done, it would be easy to add, in the introduction to built-in classes, a list of which of the named classes can or cannot be subclassed (whichever list is shorter) and note that those not in builtins cannot be.) ---------- assignee: docs@python components: Documentation messages: 182703 nosy: docs@python, terry.reedy priority: normal severity: normal stage: needs patch status: open title: Document which named built-in classes can be subclassed type: enhancement versions: Python 2.7, Python 3.3, Python 3.4 _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue17279> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
