warnings should use a ContextVar to manage filters/registry #81785

assignee = None
closed_at = <Date 2020-09-16.19:41:24.989>
created_at = <Date 2019-07-16.13:24:57.641>
labels = ['type-bug', 'library']
title = 'warnings should use a ContextVar to manage filters/registry'
updated_at = <Date 2020-09-16.19:41:24.989>
user = 'https://github.com/graingert'

activity = <Date 2020-09-16.19:41:24.989>
actor = 'gvanrossum'
assignee = 'none'
closed = True
closed_date = <Date 2020-09-16.19:41:24.989>
closer = 'gvanrossum'
components = ['Library (Lib)']
creation = <Date 2019-07-16.13:24:57.641>
creator = 'graingert'
dependencies = []
files = []
hgrepos = []
issue_num = 37604
keywords = []
message_count = 4.0
messages = ['348015', '348016', '357809', '377016']
nosy_count = 3.0
nosy_names = ['gvanrossum', 'graingert', 'Eric Wieser']
pr_nums = []
priority = 'normal'
resolution = None
stage = 'resolved'
status = 'closed'
superseder = None
type = 'behavior'
url = 'https://bugs.python.org/issue37604'
versions = []