/usr/lib/python2.7/lib2to3/fixes/ is in libpython2.7-stdlib 2.7.11-7ubuntu1.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/python2.7/lib2to3/fixes/__init__.py
/usr/lib/python2.7/lib2to3/fixes/fix_apply.py
/usr/lib/python2.7/lib2to3/fixes/fix_asserts.py
/usr/lib/python2.7/lib2to3/fixes/fix_basestring.py
/usr/lib/python2.7/lib2to3/fixes/fix_buffer.py
/usr/lib/python2.7/lib2to3/fixes/fix_callable.py
/usr/lib/python2.7/lib2to3/fixes/fix_dict.py
/usr/lib/python2.7/lib2to3/fixes/fix_except.py
/usr/lib/python2.7/lib2to3/fixes/fix_exec.py
/usr/lib/python2.7/lib2to3/fixes/fix_execfile.py
/usr/lib/python2.7/lib2to3/fixes/fix_exitfunc.py
/usr/lib/python2.7/lib2to3/fixes/fix_filter.py
/usr/lib/python2.7/lib2to3/fixes/fix_funcattrs.py
/usr/lib/python2.7/lib2to3/fixes/fix_future.py
/usr/lib/python2.7/lib2to3/fixes/fix_getcwdu.py
/usr/lib/python2.7/lib2to3/fixes/fix_has_key.py
/usr/lib/python2.7/lib2to3/fixes/fix_idioms.py
/usr/lib/python2.7/lib2to3/fixes/fix_import.py
/usr/lib/python2.7/lib2to3/fixes/fix_imports.py
/usr/lib/python2.7/lib2to3/fixes/fix_imports2.py
/usr/lib/python2.7/lib2to3/fixes/fix_input.py
/usr/lib/python2.7/lib2to3/fixes/fix_intern.py
/usr/lib/python2.7/lib2to3/fixes/fix_isinstance.py
/usr/lib/python2.7/lib2to3/fixes/fix_itertools.py
/usr/lib/python2.7/lib2to3/fixes/fix_itertools_imports.py
/usr/lib/python2.7/lib2to3/fixes/fix_long.py
/usr/lib/python2.7/lib2to3/fixes/fix_map.py
/usr/lib/python2.7/lib2to3/fixes/fix_metaclass.py
/usr/lib/python2.7/lib2to3/fixes/fix_methodattrs.py
/usr/lib/python2.7/lib2to3/fixes/fix_ne.py
/usr/lib/python2.7/lib2to3/fixes/fix_next.py
/usr/lib/python2.7/lib2to3/fixes/fix_nonzero.py
/usr/lib/python2.7/lib2to3/fixes/fix_numliterals.py
/usr/lib/python2.7/lib2to3/fixes/fix_operator.py
/usr/lib/python2.7/lib2to3/fixes/fix_paren.py
/usr/lib/python2.7/lib2to3/fixes/fix_print.py
/usr/lib/python2.7/lib2to3/fixes/fix_raise.py
/usr/lib/python2.7/lib2to3/fixes/fix_raw_input.py
/usr/lib/python2.7/lib2to3/fixes/fix_reduce.py
/usr/lib/python2.7/lib2to3/fixes/fix_renames.py
/usr/lib/python2.7/lib2to3/fixes/fix_repr.py
/usr/lib/python2.7/lib2to3/fixes/fix_set_literal.py
/usr/lib/python2.7/lib2to3/fixes/fix_standarderror.py
/usr/lib/python2.7/lib2to3/fixes/fix_sys_exc.py
/usr/lib/python2.7/lib2to3/fixes/fix_throw.py
/usr/lib/python2.7/lib2to3/fixes/fix_tuple_params.py
/usr/lib/python2.7/lib2to3/fixes/fix_types.py
/usr/lib/python2.7/lib2to3/fixes/fix_unicode.py
/usr/lib/python2.7/lib2to3/fixes/fix_urllib.py
/usr/lib/python2.7/lib2to3/fixes/fix_ws_comma.py
/usr/lib/python2.7/lib2to3/fixes/fix_xrange.py
/usr/lib/python2.7/lib2to3/fixes/fix_xreadlines.py
/usr/lib/python2.7/lib2to3/fixes/fix_zip.py