/usr/lib/python2.7/dist-packages/serial/ is in python-serial 3.2.1-1.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/python2.7/dist-packages/serial/__init__.py
/usr/lib/python2.7/dist-packages/serial/rfc2217.py
/usr/lib/python2.7/dist-packages/serial/rs485.py
/usr/lib/python2.7/dist-packages/serial/serialcli.py
/usr/lib/python2.7/dist-packages/serial/serialjava.py
/usr/lib/python2.7/dist-packages/serial/serialposix.py
/usr/lib/python2.7/dist-packages/serial/serialutil.py
/usr/lib/python2.7/dist-packages/serial/serialwin32.py
/usr/lib/python2.7/dist-packages/serial/threaded/
/usr/lib/python2.7/dist-packages/serial/threaded/__init__.py
/usr/lib/python2.7/dist-packages/serial/tools/
/usr/lib/python2.7/dist-packages/serial/tools/__init__.py
/usr/lib/python2.7/dist-packages/serial/tools/hexlify_codec.py
/usr/lib/python2.7/dist-packages/serial/tools/list_ports.py
/usr/lib/python2.7/dist-packages/serial/tools/list_ports_common.py
/usr/lib/python2.7/dist-packages/serial/tools/list_ports_linux.py
/usr/lib/python2.7/dist-packages/serial/tools/list_ports_osx.py
/usr/lib/python2.7/dist-packages/serial/tools/list_ports_posix.py
/usr/lib/python2.7/dist-packages/serial/tools/list_ports_windows.py
/usr/lib/python2.7/dist-packages/serial/tools/miniterm.py
/usr/lib/python2.7/dist-packages/serial/urlhandler/
/usr/lib/python2.7/dist-packages/serial/urlhandler/__init__.py
/usr/lib/python2.7/dist-packages/serial/urlhandler/protocol_alt.py
/usr/lib/python2.7/dist-packages/serial/urlhandler/protocol_hwgrep.py
/usr/lib/python2.7/dist-packages/serial/urlhandler/protocol_loop.py
/usr/lib/python2.7/dist-packages/serial/urlhandler/protocol_rfc2217.py
/usr/lib/python2.7/dist-packages/serial/urlhandler/protocol_serve-rfc2217.py
/usr/lib/python2.7/dist-packages/serial/urlhandler/protocol_socket.py
/usr/lib/python2.7/dist-packages/serial/urlhandler/protocol_spy.py
/usr/lib/python2.7/dist-packages/serial/win32.py