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Update to python3.6 breaks pip

This happened to me on a system running Mint 18. I received an update to 
python 3.6 the other day. After I applied it I could no longer use pip 
in the virtual environment I set up for python3.6.

(env36) jfb at jims-mint18 ~ $ pip3
Traceback (most recent call last):
   File "/home/jfb/EVs/env36/bin/pip3", line 7, in <module>
     from pip import main
"/home/jfb/EVs/env36/lib/python3.6/site-packages/pip/__init__.py", line 
43, in <module>
     from pip.utils import get_installed_distributions, get_prog
line 23, in <module>
     from pip.locations import (
"/home/jfb/EVs/env36/lib/python3.6/site-packages/pip/locations.py", line 
9, in <module>
     from distutils import sysconfig
ImportError: cannot import name 'sysconfig'

I searched for sysconfig and found this:




These locations are the same I see in my env35 environment for python3.5.

On a python list it was suggested I try:

jfb at jims-mint18 ~ $ python3.6 -m venv /home/jfb/EVs/env365 && 
./venv/bin/pip help
The virtual environment was not created successfully because ensurepip 
is not
available.  On Debian/Ubuntu systems, you need to install the python3-venv
package using the following command.

     apt-get install python3-venv

You may need to use sudo with that command.  After installing the 
package, recreate your virtual environment.

Failing command: ['/home/jfb/EVs/env365/bin/python3.6', '-Im', 
'ensurepip', '--upgrade', '--default-pip']

Couple of things troubling about this message. I just checked and 
python3-venv is installed, in fact I used it to install the python3.6 
environment I'm having problems with. I did a search and ensurepip is on 
my system at //usr/lib/python3.6/ensurepip.

I am wondering if anyone else has seen this problem and knows how to fix it.

Regards,  Jim