Follow flask tutorial to start
Create a virtualenv and activate it (Mac):
$ python3 -m venv venv
$ . venv/bin/activateOr on Windows cmd:
$ py -3 -m venv venv
$ venv\Scripts\activate.batInstall Flaskr:
$ pip install -e .Or if you are using the main branch, install Flask from source before installing Flaskr:
$ pip install -e ../..
$ pip install -e .If not working, try to install misisng things:
$ pip install Flask
$ pip install Flask-Scss$ bash flask-start.sh