Python calls newfstatat for "<frozen importlib._bootstrap>" in inspect

GitHub fields:

assignee = None
closed_at = None
created_at = <Date 2020-02-16.05:41:42.385>
labels = ['3.7', 'performance']
title = 'Python calls newfstatat for "<frozen importlib._bootstrap>" in inspect'
updated_at = <Date 2020-05-03.20:03:58.296>
user = 'https://bugs.python.org/IvanBabrou'

bugs.python.org fields:

activity = <Date 2020-05-03.20:03:58.296>
actor = 'Ivan Babrou'
assignee = 'none'
closed = False
closed_date = None
closer = None
components = []
creation = <Date 2020-02-16.05:41:42.385>
creator = 'Ivan Babrou'
dependencies = []
files = []
hgrepos = []
issue_num = 39643
keywords = []
message_count = 2.0
messages = ['362044', '367991']
nosy_count = 1.0
nosy_names = ['Ivan Babrou']
pr_nums = []
priority = 'normal'
resolution = None
stage = None
status = 'open'
superseder = None
type = 'performance'
url = 'https://bugs.python.org/issue39643'
versions = ['Python 3.7']