Serhiy Storchaka <storchaka+cpyt...@gmail.com> added the comment: This is a documented behavior. If OSError is called with a single argument, it is interpreted as the error message (as in most other exceptions). But if it is called with 2 to 5 arguments, the first argument is interpreted as the errno.
https://docs.python.org/3/library/exceptions.html#OSError >>> ValueError('Invalid command') ValueError('Invalid command') >>> str(ValueError('Invalid command')) 'Invalid command' >>> OSError('Invalid command') OSError('Invalid command') >>> str(OSError('Invalid command')) 'Invalid command' >>> import errno >>> OSError(errno.EBADF, 'Invalid command') OSError(9, 'Invalid command') >>> str(OSError(errno.EBADF, 'Invalid command')) '[Errno 9] Invalid command' ---------- nosy: +serhiy.storchaka _______________________________________ Python tracker <rep...@bugs.python.org> <https://bugs.python.org/issue33653> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
