/usr/lib/python3/dist-packages/jupyter_core/tests/ is in python3-jupyter-core 4.4.0-2.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/python3/dist-packages/jupyter_core/tests/__init__.py
/usr/lib/python3/dist-packages/jupyter_core/tests/dotipython/
/usr/lib/python3/dist-packages/jupyter_core/tests/dotipython/nbextensions/
/usr/lib/python3/dist-packages/jupyter_core/tests/dotipython/nbextensions/myext.js
/usr/lib/python3/dist-packages/jupyter_core/tests/dotipython/profile_default/
/usr/lib/python3/dist-packages/jupyter_core/tests/dotipython/profile_default/ipython_config.py
/usr/lib/python3/dist-packages/jupyter_core/tests/dotipython/profile_default/ipython_console_config.py
/usr/lib/python3/dist-packages/jupyter_core/tests/dotipython/profile_default/ipython_kernel_config.py
/usr/lib/python3/dist-packages/jupyter_core/tests/dotipython/profile_default/ipython_nbconvert_config.py
/usr/lib/python3/dist-packages/jupyter_core/tests/dotipython/profile_default/ipython_notebook_config.py
/usr/lib/python3/dist-packages/jupyter_core/tests/dotipython/profile_default/static/
/usr/lib/python3/dist-packages/jupyter_core/tests/dotipython/profile_default/static/custom/
/usr/lib/python3/dist-packages/jupyter_core/tests/dotipython/profile_default/static/custom/custom.css
/usr/lib/python3/dist-packages/jupyter_core/tests/dotipython/profile_default/static/custom/custom.js
/usr/lib/python3/dist-packages/jupyter_core/tests/dotipython_empty/
/usr/lib/python3/dist-packages/jupyter_core/tests/dotipython_empty/profile_default/
/usr/lib/python3/dist-packages/jupyter_core/tests/dotipython_empty/profile_default/ipython_config.py
/usr/lib/python3/dist-packages/jupyter_core/tests/dotipython_empty/profile_default/ipython_console_config.py
/usr/lib/python3/dist-packages/jupyter_core/tests/dotipython_empty/profile_default/ipython_kernel_config.py
/usr/lib/python3/dist-packages/jupyter_core/tests/dotipython_empty/profile_default/ipython_nbconvert_config.py
/usr/lib/python3/dist-packages/jupyter_core/tests/dotipython_empty/profile_default/ipython_notebook_config.py
/usr/lib/python3/dist-packages/jupyter_core/tests/dotipython_empty/profile_default/static/
/usr/lib/python3/dist-packages/jupyter_core/tests/dotipython_empty/profile_default/static/custom/
/usr/lib/python3/dist-packages/jupyter_core/tests/dotipython_empty/profile_default/static/custom/custom.css
/usr/lib/python3/dist-packages/jupyter_core/tests/dotipython_empty/profile_default/static/custom/custom.js
/usr/lib/python3/dist-packages/jupyter_core/tests/mocking.py
/usr/lib/python3/dist-packages/jupyter_core/tests/test_application.py
/usr/lib/python3/dist-packages/jupyter_core/tests/test_command.py
/usr/lib/python3/dist-packages/jupyter_core/tests/test_migrate.py
/usr/lib/python3/dist-packages/jupyter_core/tests/test_paths.py