Certificate verification errors in urllib.request become URLError

GitHub fields:

assignee = None
closed_at = None
created_at = <Date 2019-05-09.15:48:32.609>
labels = ['3.8', 'type-bug', 'library', '3.9', '3.10']
title = 'Certificate verification errors in urllib.request become URLError'
updated_at = <Date 2021-04-17.19:34:44.278>
user = 'https://github.com/sivel'

bugs.python.org fields:

activity = <Date 2021-04-17.19:34:44.278>
actor = 'christian.heimes'
assignee = 'none'
closed = False
closed_date = None
closer = None
components = ['Library (Lib)']
creation = <Date 2019-05-09.15:48:32.609>
creator = 'sivel'
dependencies = []
files = []
hgrepos = []
issue_num = 36866
keywords = []
message_count = 3.0
messages = ['341985', '342200', '342204']
nosy_count = 2.0
nosy_names = ['ned.deily', 'sivel']
pr_nums = []
priority = 'normal'
resolution = None
stage = None
status = 'open'
superseder = None
type = 'behavior'
url = 'https://bugs.python.org/issue36866'
versions = ['Python 3.8', 'Python 3.9', 'Python 3.10']