[issue13322] The io module doesn't support non-blocking files

Bar Harel added the comment: I have experienced both ״TypeError: can't concat NoneType to bytes״, and the fact BufferedIO returns None. @pitrou @izbyshev contrary to your belief, I think there is at least some interest in this issue. Every few months another ticket is opened about a

[issue13322] The io module doesn't support non-blocking files

Change by Joshua Bronson : -- nosy: +jab ___ Python tracker ___ ___ Python-bugs-list mailing list Unsubscribe:

[issue13322] The io module doesn't support non-blocking files

Change by Matt Joiner : -- nosy: -anacrolix ___ Python tracker ___ ___ Python-bugs-list mailing list Unsubscribe:

[issue13322] The io module doesn't support non-blocking files

STINNER Victor added the comment: TextIOWrapper, and maybe also BufferedRead, may raise an exception if the underlying file descriptor is configured in non-blocking mode. It may require an additional syscall() to query the FD properties, which may slowdown the creation of file objects in

[issue13322] The io module doesn't support non-blocking files

Change by STINNER Victor : -- components: -Documentation, IO title: buffered read() and write() does not raise BlockingIOError -> The io module doesn't support non-blocking files versions: +Python 3.9 -Python 2.7, Python 3.6, Python 3.7 ___ Python