Why I have a problem with updating Django from version 1.11.29 to 2.0.13. When updating the library django-oauth-toolkit to version 1.2.0 - version support Django 2.0 I receive an error: __version__ = pkg_resources.require("django-oauth-toolkit")[0].version pkg_resources.ContextualVersionConflict: (urllib3 1.25.11 (/.virtualenvs/django-oauth-tookit-conflict/lib/python3.6/site-packages), Requirement.parse('urllib3<1.25,>=1.21.1'), {'requests'})
It's because was changed in /oauth2_provider/init.py
version = '0.11.0'
author = "Massimiliano Pippi & Federico Frenguelli"
default_app_config = 'oauth2_provider.apps.DOTConfig'
VERSION = version # synonym
To:
import pkg_resources
version = pkg_resources.require("django-oauth-toolkit")[0].version
default_app_config = "oauth2_provider.apps.DOTConfig"