How do I use pip with Python 3.6 on Ubuntu 14.04?

I am trying to install Python 3.6 as per this answer, but I seem to be having troubles. My system is the following (it's on c9.io):

$ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 14.04.5 LTS
Release: 14.04
Codename: trusty

When I follow the instructions in the answer (add deadsnakes repository, apt-get update, sudo apt-get install python3.6), it seems to work, i.e I can run the command python3.6 and the interpreter fires up.

However, when I try to use pip from inside this using python3.6 -m pip --version, I get the following error:

Traceback (most recent call last): File "/usr/lib/python3.6/runpy.py", line 183, in _run_module_as_main mod_name, mod_spec, code = _get_module_details(mod_name, _Error) File "/usr/lib/python3.6/runpy.py", line 142, in _get_module_details return _get_module_details(pkg_main_name, error) File "/usr/lib/python3.6/runpy.py", line 109, in _get_module_details __import__(pkg_name) File "/usr/lib/python3/dist-packages/pip/__init__.py", line 59, in <module> from pip.log import logger File "/usr/lib/python3/dist-packages/pip/log.py", line 9, in <module> import colorama, pkg_resources File "<frozen importlib._bootstrap>", line 971, in _find_and_load File "<frozen importlib._bootstrap>", line 955, in _find_and_load_unlocked File "<frozen importlib._bootstrap>", line 656, in _load_unlocked File "<frozen importlib._bootstrap>", line 626, in _load_backward_compatible File "/usr/share/python-wheels/", line 1479, in <module> register_loader_type(importlib_bootstrap.SourceFileLoader, DefaultProvider)
AttributeError: module 'importlib._bootstrap' has no attribute 'SourceFileLoader'

Googling a bit, I get this SO answer. However, when I run the command:

sudo pip3 install --upgrade pip

I now get the following problem:

Requirement already up-to-date: pip in /usr/local/lib/python3.4/dist-packages (18.0)

Uninstalling and installing python3.6 again doesn't help. I still get the same error when trying to run pip. How do I fix this?

EDIT in responses to duplicate:

The alleged duplicate's top answer does not seem to work for me. I ran the following command:

$ curl | sudo python3.6

From there I got this result:

 % Total % Received % Xferd Average Speed Time Time Time Current Dload Upload Total Spent Left Speed
100 1604k 100 1604k 0 0 4637k 0 --:--:-- --:--:-- --:--:-- 4649k
Traceback (most recent call last): File "<stdin>", line 20651, in <module> File "<stdin>", line 197, in main File "<stdin>", line 119, in bootstrap File "/usr/lib/python3/dist-packages/setuptools/__init__.py", line 12, in <module> from setuptools.extension import Extension File "/usr/lib/python3/dist-packages/setuptools/extension.py", line 7, in <module> from setuptools.dist import _get_unpatched File "/usr/lib/python3/dist-packages/setuptools/dist.py", line 16, in <module> import pkg_resources File "/usr/lib/python3/dist-packages/pkg_resources.py", line 1479, in <module> register_loader_type(importlib_bootstrap.SourceFileLoader, DefaultProvider)
AttributeError: module 'importlib._bootstrap' has no attribute 'SourceFileLoader'

Bear in mind that I did this with a completely new environment (i.e I first installed python, then ran get-pip.py).

What should I do?

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