/usr/lib/python3/dist-packages/IPython/html/__main__.py is in ipython3-notebook 2.3.0-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 | if __name__ == '__main__':
from IPython.html import notebookapp as app
app.launch_new_instance()
|