Hello Flask

To run

set variables

set FLASK_APP=hello set FLASK_ENV=development

This will run hello.py file as app, by default it runs app.py, there are two environments, development and production.

run

python -m flask run

-p for port

using HTML templates

Flask uses jinja template engine.

How to create a virtual environment

install virtualenv

pip install virtualenv

create a virtual environment

python3 -m venv venv

activate virtual environment

venv\Scripts\activate

then install required libraries(eg flask) and create a package file.

pip freeze > requirements.txt