os.sched_getaffinity() is missing - module 'os' has no attribute 'sched_getaffinity'

[wesinator]

BPO	37600
Nosy	@MojoVampire, @wesinator

^{Note: these values reflect the state of the issue at the time it was migrated and might not reflect the current state.}

Show more details

GitHub fields:

assignee = None
closed_at = <Date 2019-07-15.23:14:32.279>
created_at = <Date 2019-07-15.21:08:09.599>
labels = ['3.7', 'invalid', 'type-bug', 'library']
title = "os.sched_getaffinity() is missing - module 'os' has no attribute 'sched_getaffinity'"
updated_at = <Date 2019-07-15.23:14:32.268>
user = 'https://github.com/wesinator'

bugs.python.org fields:

activity = <Date 2019-07-15.23:14:32.268>
actor = 'josh.r'
assignee = 'none'
closed = True
closed_date = <Date 2019-07-15.23:14:32.279>
closer = 'josh.r'
components = ['Library (Lib)']
creation = <Date 2019-07-15.21:08:09.599>
creator = 'wesinator'
dependencies = []
files = []
hgrepos = []
issue_num = 37600
keywords = []
message_count = 2.0
messages = ['347991', '347995']
nosy_count = 2.0
nosy_names = ['josh.r', 'wesinator']
pr_nums = []
priority = 'normal'
resolution = 'not a bug'
stage = 'resolved'
status = 'closed'
superseder = None
type = 'behavior'
url = 'https://bugs.python.org/issue37600'
versions = ['Python 3.7']

[wesinator]

Python 3.7.4 macOS 10.14.5 (homebrew)

According to https://docs.python.org/3/library/os.html#os.cpu_count , there is a method os.sched_getaffinity() (https://docs.python.org/3/library/os.html#os.sched_getaffinity)

Code to reproduce :

import os
len(os.sched_getaffinity(0))

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
AttributeError: module 'os' has no attribute 'sched_getaffinity'

[MojoVampire]

Per the docs on the function group that includes os.sched_getaffinity ( https://docs.python.org/3/library/os.html#interface-to-the-scheduler ):

These functions control how a process is allocated CPU time by the operating system. They are only available on some Unix platforms. For more detailed information, consult your Unix manpages.

New in version 3.3.

The following scheduling policies are exposed if they are supported by the operating system.

OSX doesn't support these APIs, so Python on OSX won't have them.