/usr/lib/python2.7/dist-packages/grc_gnuradio/ is in gnuradio 3.7.9.1-2ubuntu1.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/python2.7/dist-packages/grc_gnuradio/__init__.py
/usr/lib/python2.7/dist-packages/grc_gnuradio/blks2/
/usr/lib/python2.7/dist-packages/grc_gnuradio/blks2/__init__.py
/usr/lib/python2.7/dist-packages/grc_gnuradio/blks2/error_rate.py
/usr/lib/python2.7/dist-packages/grc_gnuradio/blks2/packet.py
/usr/lib/python2.7/dist-packages/grc_gnuradio/blks2/selector.py
/usr/lib/python2.7/dist-packages/grc_gnuradio/blks2/tcp.py
/usr/lib/python2.7/dist-packages/grc_gnuradio/wxgui/
/usr/lib/python2.7/dist-packages/grc_gnuradio/wxgui/__init__.py
/usr/lib/python2.7/dist-packages/grc_gnuradio/wxgui/panel.py
/usr/lib/python2.7/dist-packages/grc_gnuradio/wxgui/top_block_gui.py