`dis.findlabels()` should accept a code object

GitHub fields:

assignee = None
closed_at = None
created_at = <Date 2020-04-03.08:50:08.184>
labels = ['type-bug', 'library', '3.9']
title = '`dis.findlabels()` should accept a code object'
updated_at = <Date 2020-04-04.07:26:38.941>
user = 'https://github.com/laike9m'

bugs.python.org fields:

activity = <Date 2020-04-04.07:26:38.941>
actor = 'laike9m'
assignee = 'none'
closed = False
closed_date = None
closer = None
components = ['Library (Lib)']
creation = <Date 2020-04-03.08:50:08.184>
creator = 'laike9m'
dependencies = []
files = []
hgrepos = []
issue_num = 40169
keywords = ['patch']
message_count = 1.0
messages = ['365684']
nosy_count = 2.0
nosy_names = ['serhiy.storchaka', 'laike9m']
pr_nums = ['19356']
priority = 'normal'
resolution = None
stage = 'patch review'
status = 'open'
superseder = None
type = 'behavior'
url = 'https://bugs.python.org/issue40169'
versions = ['Python 3.9']