dir() does not return the list of valid attributes for the object

GitHub fields:

assignee = None
closed_at = None
created_at = <Date 2020-03-28.19:47:28.704>
labels = ['interpreter-core', 'type-bug']
title = 'dir() does not return the list of valid attributes for the object'
updated_at = <Date 2020-03-31.21:33:43.162>
user = 'https://github.com/serhiy-storchaka'

bugs.python.org fields:

activity = <Date 2020-03-31.21:33:43.162>
actor = 'gvanrossum'
assignee = 'none'
closed = False
closed_date = None
closer = None
components = ['Interpreter Core']
creation = <Date 2020-03-28.19:47:28.704>
creator = 'serhiy.storchaka'
dependencies = []
files = []
hgrepos = []
issue_num = 40098
keywords = []
message_count = 11.0
messages = ['365227', '365271', '365272', '365411', '365416', '365417', '365419', '365420', '365423', '365426', '365428']
nosy_count = 4.0
nosy_names = ['gvanrossum', 'tim.peters', 'serhiy.storchaka', 'veky']
pr_nums = []
priority = 'normal'
resolution = None
stage = None
status = 'open'
superseder = None
type = 'behavior'
url = 'https://bugs.python.org/issue40098'
versions = []