Wrong behavior of help function on module

GitHub fields:

assignee = None
closed_at = None
created_at = <Date 2018-05-28.14:22:23.146>
labels = ['3.7', 'type-bug', 'library']
title = 'Wrong behavior of help function on module'
updated_at = <Date 2019-08-01.05:15:50.897>
user = 'https://bugs.python.org/OlegOleinik'

bugs.python.org fields:

activity = <Date 2019-08-01.05:15:50.897>
actor = 'corona10'
assignee = 'none'
closed = False
closed_date = None
closer = None
components = ['Library (Lib)']
creation = <Date 2018-05-28.14:22:23.146>
creator = 'Oleg.Oleinik'
dependencies = []
files = []
hgrepos = []
issue_num = 33668
keywords = ['patch']
message_count = 6.0
messages = ['317852', '318335', '318336', '321653', '321654', '348838']
nosy_count = 5.0
nosy_names = ['yselivanov', 'levkivskyi', 'tuxtimo', 'corona10', 'Oleg.Oleinik']
pr_nums = ['8284']
priority = 'normal'
resolution = None
stage = 'patch review'
status = 'open'
superseder = None
type = 'behavior'
url = 'https://bugs.python.org/issue33668'
versions = ['Python 3.7']