/usr/lib/python3/dist-packages/gsw/ is in python3-gsw 3.0.2-2.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/python3/dist-packages/gsw/__init__.py
/usr/lib/python3/dist-packages/gsw/gibbs/
/usr/lib/python3/dist-packages/gsw/gibbs/__init__.py
/usr/lib/python3/dist-packages/gsw/gibbs/absolute_salinity_sstar_ct.py
/usr/lib/python3/dist-packages/gsw/gibbs/basic_thermodynamic_t.py
/usr/lib/python3/dist-packages/gsw/gibbs/constants.py
/usr/lib/python3/dist-packages/gsw/gibbs/conversions.py
/usr/lib/python3/dist-packages/gsw/gibbs/density_enthalpy_48.py
/usr/lib/python3/dist-packages/gsw/gibbs/density_enthalpy_48_ct.py
/usr/lib/python3/dist-packages/gsw/gibbs/density_enthalpy_ct_exact.py
/usr/lib/python3/dist-packages/gsw/gibbs/derivatives.py
/usr/lib/python3/dist-packages/gsw/gibbs/earth.py
/usr/lib/python3/dist-packages/gsw/gibbs/freezing.py
/usr/lib/python3/dist-packages/gsw/gibbs/geostrophic.py
/usr/lib/python3/dist-packages/gsw/gibbs/geostrophic_48.py
/usr/lib/python3/dist-packages/gsw/gibbs/isobaric.py
/usr/lib/python3/dist-packages/gsw/gibbs/library.py
/usr/lib/python3/dist-packages/gsw/gibbs/neutral_nonlinear_48.py
/usr/lib/python3/dist-packages/gsw/gibbs/practical_salinity.py
/usr/lib/python3/dist-packages/gsw/gibbs/steric.py
/usr/lib/python3/dist-packages/gsw/gibbs/water_column_48.py
/usr/lib/python3/dist-packages/gsw/utilities/
/usr/lib/python3/dist-packages/gsw/utilities/__init__.py
/usr/lib/python3/dist-packages/gsw/utilities/data/
/usr/lib/python3/dist-packages/gsw/utilities/data/gsw_cf.npz
/usr/lib/python3/dist-packages/gsw/utilities/data/gsw_cv_v3_0.npz
/usr/lib/python3/dist-packages/gsw/utilities/data/gsw_data_v3_0.npz
/usr/lib/python3/dist-packages/gsw/utilities/data/gsw_demo_data_v3_0.npz
/usr/lib/python3/dist-packages/gsw/utilities/mat2npz.py
/usr/lib/python3/dist-packages/gsw/utilities/utilities.py