Postgresql pip install pipenv go inside the environment pipenv shell pip install -r requirements.txt #setup environment variables #Windows set FLASK_ENV=development set DATABASE_URL=postgresql://postgres:test@localhost/PythonStarterDB set DATABASE_TEST_URL=postgresql://postgres:test@localhost/PythonStarterDBTest set FLASK_APP=run #Run the app flask run #Run unit tests python test_users.py MY SQL pip install pipenv pipenv shell pip install -r requirements.txt set FLASK_ENV=development set DATABASE_URL= mysql+pymysql://root:test@localhost/ PythonStarterDB set DATABASE_TEST_URL= mysql+pymysql://root:test@localhost /PythonStarterDBTest set FLASK_APP=run.py #Run the app flask run #Run unit tests python test_users.py Mongo DB pip install pipenv pipenv shell pip install -r requirements.txt set FLASK_ENV=development set DATABASE_URL= mongodb://localhost:27017/StarterPacksDB set DATABASE_TEST...