functools.partial missing __weakref__ descriptor?

GitHub fields:

assignee = None
closed_at = None
created_at = <Date 2021-02-27.18:37:25.298>
labels = ['type-bug', '3.8']
title = 'functools.partial missing __weakref__ descriptor?'
updated_at = <Date 2021-02-27.21:15:12.591>
user = 'https://github.com/mr-nfamous'

bugs.python.org fields:

activity = <Date 2021-02-27.21:15:12.591>
actor = 'rhettinger'
assignee = 'none'
closed = False
closed_date = None
closer = None
components = []
creation = <Date 2021-02-27.18:37:25.298>
creator = 'bup'
dependencies = []
files = []
hgrepos = []
issue_num = 43341
keywords = []
message_count = 1.0
messages = ['387781']
nosy_count = 2.0
nosy_names = ['rhettinger', 'bup']
pr_nums = []
priority = 'normal'
resolution = None
stage = None
status = 'open'
superseder = None
type = 'behavior'
url = 'https://bugs.python.org/issue43341'
versions = ['Python 3.8']