/usr/lib/python3/dist-packages/yt/fields/ is in python3-yt 3.2.1-2.
This file is owned by root:root, with mode 0o755.
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/usr/lib/python3/dist-packages/yt/fields/__config__.py
/usr/lib/python3/dist-packages/yt/fields/__init__.py
/usr/lib/python3/dist-packages/yt/fields/angular_momentum.py
/usr/lib/python3/dist-packages/yt/fields/api.py
/usr/lib/python3/dist-packages/yt/fields/astro_fields.py
/usr/lib/python3/dist-packages/yt/fields/astro_simulations.py
/usr/lib/python3/dist-packages/yt/fields/cosmology_fields.py
/usr/lib/python3/dist-packages/yt/fields/derived_field.py
/usr/lib/python3/dist-packages/yt/fields/domain_context.py
/usr/lib/python3/dist-packages/yt/fields/field_aliases.py
/usr/lib/python3/dist-packages/yt/fields/field_detector.py
/usr/lib/python3/dist-packages/yt/fields/field_exceptions.py
/usr/lib/python3/dist-packages/yt/fields/field_functions.py
/usr/lib/python3/dist-packages/yt/fields/field_info_container.py
/usr/lib/python3/dist-packages/yt/fields/field_plugin_registry.py
/usr/lib/python3/dist-packages/yt/fields/fluid_fields.py
/usr/lib/python3/dist-packages/yt/fields/fluid_vector_fields.py
/usr/lib/python3/dist-packages/yt/fields/geometric_fields.py
/usr/lib/python3/dist-packages/yt/fields/interpolated_fields.py
/usr/lib/python3/dist-packages/yt/fields/local_fields.py
/usr/lib/python3/dist-packages/yt/fields/magnetic_field.py
/usr/lib/python3/dist-packages/yt/fields/my_plugin_fields.py
/usr/lib/python3/dist-packages/yt/fields/particle_fields.py
/usr/lib/python3/dist-packages/yt/fields/setup.py
/usr/lib/python3/dist-packages/yt/fields/species_fields.py
/usr/lib/python3/dist-packages/yt/fields/tests/
/usr/lib/python3/dist-packages/yt/fields/tests/__init__.py
/usr/lib/python3/dist-packages/yt/fields/tests/test_fields.py
/usr/lib/python3/dist-packages/yt/fields/vector_operations.py