Gfilui

I have tried sudo apt remove --purge on various packages. I get the same when I reinstall.

I have also tried reinstall using aptitude. This does not work.

My current workaround is to run pylint3 as root, which works, but is bad practice.

pip3

 $ pip3
Traceback (most recent call last):
 File "/usr/lib/python3/dist-packages/pip/_vendor/__init__.py", line 33, in vendored
 __import__(vendored_name, globals(), locals(), level=0)
ImportError: No module named 'pip._vendor.pkg_resources'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
 File "/usr/bin/pip3", line 9, in <module>
 from pip import main
 File "/usr/lib/python3/dist-packages/pip/__init__.py", line 13, in <module>
 from pip.exceptions import InstallationError, CommandError, PipError
 File "/usr/lib/python3/dist-packages/pip/exceptions.py", line 6, in <module>
 from pip._vendor.six import iteritems
 File "/usr/lib/python3/dist-packages/pip/_vendor/__init__.py", line 75, in <module>
 vendored("pkg_resources")
 File "/usr/lib/python3/dist-packages/pip/_vendor/__init__.py", line 36, in vendored
 __import__(modulename, globals(), locals(), level=0)
 File "<frozen importlib._bootstrap>", line 969, in _find_and_load
 File "<frozen importlib._bootstrap>", line 958, in _find_and_load_unlocked
 File "<frozen importlib._bootstrap>", line 664, in _load_unlocked
 File "<frozen importlib._bootstrap>", line 634, in _load_backward_compatible
 File "/usr/share/python-wheels/pkg_resources-0.0.0-py2.py3-none-any.whl/pkg_resources/__init__.py", line 2927, in <module>
 File "/usr/share/python-wheels/pkg_resources-0.0.0-py2.py3-none-any.whl/pkg_resources/__init__.py", line 2913, in _call_aside
 File "/usr/share/python-wheels/pkg_resources-0.0.0-py2.py3-none-any.whl/pkg_resources/__init__.py", line 2952, in _initialize_master_working_set
 File "/usr/share/python-wheels/pkg_resources-0.0.0-py2.py3-none-any.whl/pkg_resources/__init__.py", line 956, in subscribe
 File "/usr/share/python-wheels/pkg_resources-0.0.0-py2.py3-none-any.whl/pkg_resources/__init__.py", line 2952, in <lambda>
 File "/usr/share/python-wheels/pkg_resources-0.0.0-py2.py3-none-any.whl/pkg_resources/__init__.py", line 2515, in activate
 File "/usr/share/python-wheels/pkg_resources-0.0.0-py2.py3-none-any.whl/pkg_resources/__init__.py", line 2097, in declare_namespace
 File "/usr/share/python-wheels/pkg_resources-0.0.0-py2.py3-none-any.whl/pkg_resources/__init__.py", line 2047, in _handle_ns
 File "/usr/share/python-wheels/pkg_resources-0.0.0-py2.py3-none-any.whl/pkg_resources/__init__.py", line 2066, in _rebuild_mod_path
AttributeError: '_NamespacePath' object has no attribute 'sort'

pylint3

$ pylint3
Traceback (most recent call last):
 File "/usr/bin/pylint3", line 3, in <module>
 run_pylint()
 File "/usr/lib/python3/dist-packages/pylint/__init__.py", line 22, in run_pylint
 from pylint.lint import Run
 File "/usr/lib/python3/dist-packages/pylint/lint.py", line 44, in <module>
 import astroid
 File "/usr/lib/python3/dist-packages/astroid/__init__.py", line 54, in <module>
 from astroid.nodes import *
 File "/usr/lib/python3/dist-packages/astroid/nodes.py", line 54, in <module>
 from astroid.scoped_nodes import (
 File "/usr/lib/python3/dist-packages/astroid/scoped_nodes.py", line 35, in <module>
 from astroid import manager
 File "/usr/lib/python3/dist-packages/astroid/manager.py", line 29, in <module>
 from astroid import modutils
 File "/usr/lib/python3/dist-packages/astroid/modutils.py", line 40, in <module>
 import pkg_resources
 File "/usr/lib/python3/dist-packages/pkg_resources/__init__.py", line 2927, in <module>
 @_call_aside
 File "/usr/lib/python3/dist-packages/pkg_resources/__init__.py", line 2913, in _call_aside
 f(*args, **kwargs)
 File "/usr/lib/python3/dist-packages/pkg_resources/__init__.py", line 2952, in _initialize_master_working_set
 add_activation_listener(lambda dist: dist.activate())
 File "/usr/lib/python3/dist-packages/pkg_resources/__init__.py", line 956, in subscribe
 callback(dist)
 File "/usr/lib/python3/dist-packages/pkg_resources/__init__.py", line 2952, in <lambda>
 add_activation_listener(lambda dist: dist.activate())
 File "/usr/lib/python3/dist-packages/pkg_resources/__init__.py", line 2515, in activate
 declare_namespace(pkg)
 File "/usr/lib/python3/dist-packages/pkg_resources/__init__.py", line 2097, in declare_namespace
 _handle_ns(packageName, path_item)
 File "/usr/lib/python3/dist-packages/pkg_resources/__init__.py", line 2047, in _handle_ns
 _rebuild_mod_path(path, packageName, module)
 File "/usr/lib/python3/dist-packages/pkg_resources/__init__.py", line 2066, in _rebuild_mod_path
 orig_path.sort(key=position_in_sys_path)
AttributeError: '_NamespacePath' object has no attribute 'sort'

update
This fixed it.
sudo apt remove --purge python3-setuptools
I would love to understand how.

update update
I re-installed dependencies that I need. Then the problem cam back.

@Kenavera I am at the newest python3-tools from the repo (according to synaptic python3-tools 20.7.0-1, which seems quite old).

running python3 as me, as pylint3 at root is working. I still would like a better solution.

sudo apt-get upgrade python-setuptools did the trick for me. Hope this helps you too.

Clean up python installation
Restore Python installation to default plus apt package dependencies

list all things manually installed via apt:

comm -23 <(apt-mark showmanual | sort -u) <(gzip -dc /var/log/installer/initial-status.gz | sed -n 's/^Package: //p' | sort -u)

remove pylint3 and all python3-*. For me this was:

sudo apt remove pylint3 python3-googleapi python3-lxml python3-matplotlib python3-numpy python3-pip python3-pyocr python3-scipy python3-tk python-lxml python-numpy python-pip python-setuptools

sudo apt autoremove

list things installed via pip ls -ltd /usr/local/lib/python3.5/dist-packages/*

remove them

pip3 uninstall setuptools
pip3 uninstall pydicom
pip3 uninstall docx

lastly pip itself

pip3 uninstall pip

delete everything installed for the user by deleting all from here

'$HOME/.local/lib/python*'

Reinstall

sudo apt install python3-pip pylint3 python3-venv

Set up virtual environment

I have a project called plan-report. in that directory (not as root)

python3 -m venv plan-report-env
chmod +x ./plan-report-env/bin/activate

# this line needs repeating each time a terminal is opened
./plan-report-env/bin/activate

reinstall python packages in the virtual environment. eg

pip install numpy

Note that it was python3 that created the venv, so now you just say pip, not pip3. seems ok to upgrade pip within the venv too.

pip install --upgrade pip