New submission from James Stevens : As per the underlying "libc" call, the node created with "mknod" is subjected to the user's current umask setting. This is not made clear in the Python documentation, but the "libc" documentation makes this clear (see attached). ---------- assignee: docs@python components: Documentation files: Selection_2018-06-26_003.png messages: 320490 nosy: docs@python, james_r_c_stevens priority: normal severity: normal status: open title: os.mknod is subject to "umask" versions: Python 3.6 Added file: https://bugs.python.org/file47653/Selection_2018-06-26_003.png _______________________________________ Python tracker https://bugs.python.org/issue33971 _______________________________________