I'm trying to run amundsengremlin test (python -m pytest --roundtrip .), in order to validate my environment, but when I run the test, it just return the following error: ...

When I add ansible_python_interpreter to centos item in inventory then it fails also with same error "No module named ansible.module_utils.basic". (even centos machine has Python 2.6) ...

Reasons Here are some possible reasons for the ModuleNotFoundError: No module named 'pip' error: OS Upgrade: During the OS upgrade, some packages might have been misconfigured or not properly upgraded ...