/usr/lib/python3/dist-packages/future/backports/email/ is in python3-future 0.15.2-4.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/python3/dist-packages/future/backports/email/__init__.py
/usr/lib/python3/dist-packages/future/backports/email/_encoded_words.py
/usr/lib/python3/dist-packages/future/backports/email/_header_value_parser.py
/usr/lib/python3/dist-packages/future/backports/email/_parseaddr.py
/usr/lib/python3/dist-packages/future/backports/email/_policybase.py
/usr/lib/python3/dist-packages/future/backports/email/base64mime.py
/usr/lib/python3/dist-packages/future/backports/email/charset.py
/usr/lib/python3/dist-packages/future/backports/email/encoders.py
/usr/lib/python3/dist-packages/future/backports/email/errors.py
/usr/lib/python3/dist-packages/future/backports/email/feedparser.py
/usr/lib/python3/dist-packages/future/backports/email/generator.py
/usr/lib/python3/dist-packages/future/backports/email/header.py
/usr/lib/python3/dist-packages/future/backports/email/headerregistry.py
/usr/lib/python3/dist-packages/future/backports/email/iterators.py
/usr/lib/python3/dist-packages/future/backports/email/message.py
/usr/lib/python3/dist-packages/future/backports/email/mime/
/usr/lib/python3/dist-packages/future/backports/email/mime/__init__.py
/usr/lib/python3/dist-packages/future/backports/email/mime/application.py
/usr/lib/python3/dist-packages/future/backports/email/mime/audio.py
/usr/lib/python3/dist-packages/future/backports/email/mime/base.py
/usr/lib/python3/dist-packages/future/backports/email/mime/image.py
/usr/lib/python3/dist-packages/future/backports/email/mime/message.py
/usr/lib/python3/dist-packages/future/backports/email/mime/multipart.py
/usr/lib/python3/dist-packages/future/backports/email/mime/nonmultipart.py
/usr/lib/python3/dist-packages/future/backports/email/mime/text.py
/usr/lib/python3/dist-packages/future/backports/email/parser.py
/usr/lib/python3/dist-packages/future/backports/email/policy.py
/usr/lib/python3/dist-packages/future/backports/email/quoprimime.py
/usr/lib/python3/dist-packages/future/backports/email/utils.py