Debug logging when adding a TarFile object

GitHub fields:

assignee = None
closed_at = None
created_at = <Date 2020-09-05.23:48:02.149>
labels = ['3.7', 'type-feature', 'library']
title = 'Debug logging when adding a TarFile object'
updated_at = <Date 2020-09-06.02:23:09.327>
user = 'https://github.com/llamafilm'

bugs.python.org fields:

activity = <Date 2020-09-06.02:23:09.327>
actor = 'xtreak'
assignee = 'none'
closed = False
closed_date = None
closer = None
components = ['Library (Lib)']
creation = <Date 2020-09-05.23:48:02.149>
creator = 'ebalsley'
dependencies = []
files = []
hgrepos = []
issue_num = 41728
keywords = ['patch']
message_count = 1.0
messages = ['376448']
nosy_count = 3.0
nosy_names = ['lars.gustaebel', 'ethan.furman', 'ebalsley']
pr_nums = ['22116']
priority = 'normal'
resolution = None
stage = 'patch review'
status = 'open'
superseder = None
type = 'enhancement'
url = 'https://bugs.python.org/issue41728'
versions = ['Python 3.7']