django-tables2 module missing
You're using a hyphen but the module name has an underscore. The instructions ask you to add "django_tables2" to INSTALLED_APPS and not "django-tables2".
I am trying to use django-tables2 in my django project but I keep getting 

"ModuleNotFoundError: No module named 'django-tables2'" error.

installed it with pip install - everything OK.
added django-tables2 to INSTALLED_APPS (it seems the problem is here).
Thanks you.