ImportError: Couldn't import Django. Are you sure it's installed and available on your PYTHONPATH environment variable? Did you forget to activate a virtual environme nt? code example

Example 1: ImportError: Couldn't import Django. Are you sure it's installed and available on your PYTHONPATH environment variable? Did you forget to activate a virtual environment?

export PYTHONPATH=/Library/Python/3.7/site-packages

Example 2: couldn't import django. are you sure it's installed and available on your pythonpath environment variable? did you forget to activate a virtual environment?

pip install django

Example 3: couldn't import django. are you sure it's installed and available on your pythonpath environment variable? did you forget to activate a virtual environment?

source newenv/bin/activate

Example 4: couldn't import django. are you sure it's installed and available on your pythonpath environment variable? did you forget to activate a virtual environment?

sudo pip3 install virtualenv