/usr/lib/python3/dist-packages/dask/distributed.py is in python3-dask 0.16.0-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
| 1 2 3 4 5 6 7 8 9 10 11 | # flake8: noqa
from __future__ import absolute_import, division, print_function
try:
    from distributed import *
except ImportError:
    msg = ("Dask's distributed scheduler is not installed.\n\n"
           "Please either conda or pip install dask distributed:\n\n"
           "  conda install dask distributed          # either conda install\n"
           "  pip install dask distributed --upgrade  # or pip install")
    raise ImportError(msg)
 |