contextlib.suppress should capture exception for inspection and filter on substrings

GitHub fields:

assignee = None
closed_at = None
created_at = <Date 2018-03-26.16:40:34.048>
labels = ['3.8', 'type-feature', 'library']
title = 'contextlib.suppress should capture exception for inspection and filter on substrings'
updated_at = <Date 2018-03-27.13:11:29.142>
user = 'https://github.com/jaraco'

bugs.python.org fields:

activity = <Date 2018-03-27.13:11:29.142>
actor = 'ncoghlan'
assignee = 'none'
closed = False
closed_date = None
closer = None
components = ['Library (Lib)']
creation = <Date 2018-03-26.16:40:34.048>
creator = 'jaraco'
dependencies = []
files = []
hgrepos = []
issue_num = 33146
keywords = []
message_count = 4.0
messages = ['314461', '314480', '314503', '314524']
nosy_count = 4.0
nosy_names = ['rhettinger', 'jaraco', 'ncoghlan', 'serhiy.storchaka']
pr_nums = []
priority = 'normal'
resolution = None
stage = None
status = 'open'
superseder = None
type = 'enhancement'
url = 'https://bugs.python.org/issue33146'
versions = ['Python 3.8']