/usr/share/octave/packages/symbolic-2.6.0/private/ is in octave-symbolic 2.6.0-3build1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/octave/packages/symbolic-2.6.0/private/assert_have_python_and_sympy.m
/usr/share/octave/packages/symbolic-2.6.0/private/check_and_convert.m
/usr/share/octave/packages/symbolic-2.6.0/private/do_highbyte_escapes.m
/usr/share/octave/packages/symbolic-2.6.0/private/extractblock.m
/usr/share/octave/packages/symbolic-2.6.0/private/get_sym_from_python.m
/usr/share/octave/packages/symbolic-2.6.0/private/indent_lines.m
/usr/share/octave/packages/symbolic-2.6.0/private/octave_array_to_python.m
/usr/share/octave/packages/symbolic-2.6.0/private/python_copy_vars_from.m
/usr/share/octave/packages/symbolic-2.6.0/private/python_copy_vars_to.m
/usr/share/octave/packages/symbolic-2.6.0/private/python_header.m
/usr/share/octave/packages/symbolic-2.6.0/private/python_header.py
/usr/share/octave/packages/symbolic-2.6.0/private/python_ipc_driver.m
/usr/share/octave/packages/symbolic-2.6.0/private/python_ipc_native.m
/usr/share/octave/packages/symbolic-2.6.0/private/python_ipc_popen2.m
/usr/share/octave/packages/symbolic-2.6.0/private/python_ipc_sysoneline.m
/usr/share/octave/packages/symbolic-2.6.0/private/python_ipc_system.m
/usr/share/octave/packages/symbolic-2.6.0/private/readblock.m
/usr/share/octave/packages/symbolic-2.6.0/private/store_vars_in_python.m
/usr/share/octave/packages/symbolic-2.6.0/private/undo_highbyte_escapes.m
/usr/share/octave/packages/symbolic-2.6.0/private/valid_sym_assumptions.m
/usr/share/octave/packages/symbolic-2.6.0/private/write_lines.m