inspect.getsourcefile and inspect.getcomments do not work with decorated functions

GitHub fields:

assignee = None
closed_at = None
created_at = <Date 2018-08-01.07:20:53.875>
labels = ['library']
title = 'inspect.getsourcefile and inspect.getcomments do not work with decorated functions'
updated_at = <Date 2020-03-12.09:29:43.433>
user = 'https://github.com/eric-wieser'

bugs.python.org fields:

activity = <Date 2020-03-12.09:29:43.433>
actor = 'Eric Wieser'
assignee = 'none'
closed = False
closed_date = None
closer = None
components = ['Library (Lib)']
creation = <Date 2018-08-01.07:20:53.875>
creator = 'Eric.Wieser'
dependencies = []
files = []
hgrepos = []
issue_num = 34305
keywords = ['patch']
message_count = 4.0
messages = ['322847', '324704', '363448', '364006']
nosy_count = 5.0
nosy_names = ['yselivanov', 'Eric.Wieser', 'rmccampbell7', 'xtreak', 'Eric Wieser']
pr_nums = ['8602']
priority = 'normal'
resolution = None
stage = 'patch review'
status = 'open'
superseder = None
type = None
url = 'https://bugs.python.org/issue34305'
versions = []