select.epoll and select.kqueue objects have a close() method, but not select.poll objects, whereas all these objects store internally a file descriptor.
select.poll lacks also a fileno() method.
I added the fileno() method in my implementation of the PEP 446 (see issue #18571).

See also issue #16853 "add a Selector to the select module".

This all sounds fine to fix without waiting for anything else -- can you attach a patch here?

Just to be explicit (there are typos in Victor's original messages): it's about select.devpoll, for Solaris-derivatives with /dev/poll, and not for select.poll, based on poll() syscall.

"Just to be explicit (there are typos in Victor's original messages): it's about select.devpoll, for Solaris-derivatives with /dev/poll, and not for select.poll, based on poll() syscall."
Oops sorry, yes, I'm talking about select.devpoll, its structure has a "int fd_devpoll;" field:
typedef struct {
    PyObject_HEAD
    int fd_devpoll;
    int max_n_fds;
    int n_fds;
    struct pollfd *fds;
} devpollObject;

"This all sounds fine to fix without waiting for anything else -- can you attach a patch here?"
I opened the issue as a reminder for me. Here is a patch.
 * Add close() and fileno() methods and a closed attribute (property) to devpoll object
 * Document closed attribute of epoll and kqueue objects
 * Add tests on closed object for devpoll, epoll and kqueue. There was no test for devpoll, epoll nor kqueue :-(
select.poll is still not tested. We should add much more tests, especially tests checking than a fd becomes ready for each implementation. We may develop these tests using #16853 ?
I ran test_select on Linux, so I only checked the epoll unit test.
The "closed" attribute of epoll and kqueue objects should also be documented in Python 2.7 and 3.3.

poll, devpoll, epoll and kqueue are tested in test_poll.py, test_devpoll.py, test_epoll.py and test_kqueue.py test files.

Updated patch: move tests to the right test files and test that close() can be called more than once.

New changeset ccbe2132392b by Victor Stinner in branch 'default':
Close #18794: Add a fileno() method and a closed attribute to select.devpoll
http://hg.python.org/cpython/rev/ccbe2132392b

Charles-François Natali and Guido van Rossum: thanks for your reviews ;-)

nosy: + python-dev
messages: + msg195826

resolution: fixed
stage: needs patch -> resolved

messages: + msg195814

stage: needs patch