unicodedata.name() doesn't have names for control characters

GitHub fields:

assignee = None
closed_at = None
created_at = <Date 2016-07-12.13:10:49.294>
labels = ['type-bug', '3.8', '3.9', '3.10', 'library', 'expert-unicode']
title = "unicodedata.name() doesn't have names for control characters"
updated_at = <Date 2021-03-08.20:13:44.308>
user = 'https://bugs.python.org/zwol'

bugs.python.org fields:

activity = <Date 2021-03-08.20:13:44.308>
actor = 'vstinner'
assignee = 'none'
closed = False
closed_date = None
closer = None
components = ['Library (Lib)', 'Unicode']
creation = <Date 2016-07-12.13:10:49.294>
creator = 'zwol'
dependencies = []
files = []
hgrepos = []
issue_num = 27496
keywords = []
message_count = 4.0
messages = ['270242', '270245', '270247', '270254']
nosy_count = 4.0
nosy_names = ['ezio.melotti', 'r.david.murray', 'eryksun', 'zwol']
pr_nums = []
priority = 'normal'
resolution = None
stage = None
status = 'open'
superseder = None
type = 'behavior'
url = 'https://bugs.python.org/issue27496'
versions = ['Python 3.8', 'Python 3.9', 'Python 3.10']