moving from tkinter to wxpython

[Larz60+]

I do have Linux memory sticks, but their slow.
You got it on the code.
I used Linux Mint for quite a while, but it just died on me twice, so I switched to openSuse
and ran with that for several years.
there two things you can do to get correct pip
1st try pip3 install wxpython
if that fails, find your Python3.6 package, pip should be in the Scripts directory use full path to make sure you are running the right version.

Then there's another possible solution:
The reason I asked which IDE you used is that PyCharm, which I use has a very simple package installation manager, which to date (on windows, not sure if it has the same performance on Linux) has not failed me.
To use, you simply click on settings (on the file menu), go to your project Interpreter page, click on the plus sign next to the currently installed packages, and select wxpython. It will make sure that the proper version is installed based on the Interpreter version assigned to the project. It has a sweet interface for creating virtual environment and cloning, pulling and pushing GitHub packages.

I know it's runs on Ubuntu, not sure about mint. Since they have both a commercial and community edition, mint may not support it.