pip cannot install module due to html5lib error

Question

I am trying to set up a tensorflow environment in win7. I followed the instructions here and I guess I have installed tensorflow. I managed to run the small script in the previous link but only inside the console of Anaconda tensorflow environment. Since the windows' console is a bit primitive (to be polite) I would like to install Ipython. The problem is I am getting an error when trying to use pip . For example:

pip install pyreadline

gives this

Traceback (most recent call last): File "D:\\Software\\Anaconda3\\Scripts\\pip-script.py", line 6, in from pip import main File "D:\\Software\\Anaconda3\\lib\\site-packages\\pip__init__.py", line 28, in from pip.vcs import git, mercurial, subversion, bazaar # noqa File "D:\\Software\\Anaconda3\\lib\\site-packages\\pip\\vcs\\subversion.py", line 9, in from pip.index import Link File "D:\\Software\\Anaconda3\\lib\\site-packages\\pip\\index.py", line 33, in from pip._vendor import html5lib, requests, six ImportError: cannot import name 'html5lib'

Using some instructions I also tried this one:

python -m pip install pyreadline

with the same output. pyreadline is considered prerequirement for Ipython I think. If my console is elevated or not does no difference.

Generally speaking it seems all modules' installation attempts produce the same message. Even: pip install --ignore-installed --upgrade html5lib does so.

My system is win7, python 3.6.2 and I installed tensorflow using the instruction for Anaconda. From Anaconda Navigator I see html5lib as installed. So, how can bypass this problem to be able to install new modules?

Edit: I followed the instructions here which had a similar to mine problem but although accepted as an answer there it didn't solve the problem. html5lib seems to be reinstalled but other modules are not.

Answer 1

The solution to my problem came as an answer to this (very similar) but also 4 years old question .

The problem is that the solution for me that actually worked is not the accepted one, so I am providing the second answer as the solution to my problem.

Using:

conda install -c anaconda html5lib

seems to unravel the dependencies and make pip work again. ref: https://anaconda.org/anaconda/html5lib