Eryk Sun <eryk...@gmail.com> added the comment: There isn't a problem in most cases, since functions that take a callback usually call it before returning. If the library does keep a long-lived reference to a callback (e.g. a console control handler in Windows), there are ways to support this, depending on the context (e.g. global variable, class attribute, instance attribute, a dict).
However, for the case where a callback should remain referenced for the lifetime of the process, it would be convenient to have a `callback_incref` option. Internally this would use a new function flag `FUNCFLAG_CALLBACK_INCREF`. ---------- nosy: +eryksun title: [ctypes] increase refcount of a CFUNCTYPE instance when passing to a CDLL -> [ctypes] increase the refcount of a callback function type: behavior -> enhancement versions: +Python 3.7, Python 3.8 _______________________________________ Python tracker <rep...@bugs.python.org> <https://bugs.python.org/issue33406> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
