ImportError: No module named django.core even I getting when I am importing django in python console
Try using django-admin instead of python-admin. I made a new virtual environment, downloaded django via pip and django-admin startproject myapp worked. Don't forget to activate the virtual environment
I had recently updated my Django version from 1.11 to 3.0. when I want to create a project using python-admin startproject mysite I am getting error as 

ImportError: No module named django.core

I tried importing the Django in python3 console it is working.