• Configuring the flask

- create a project folder
- create a virtual environment
- install flask to virtual environment
- setup environment vairiables
- install the flask wrf-extension
- create requirements.txt file to track all dependencies

• create folder enrollment
• create virtual environmen and activate it
• install the package here in this environment

pip3 install Flask
pip3 install flask-wtf

• .flaskenv file in your project folder for storing environment variable
• to use .env and .flaskenv file install below package

pip3 install python-dotenv

• install all package from file

pip3 install -r requirements.txt

• to run we have below two methods

python3 main.py

    OR

flask run

• include

- this adds pages to another pages

{% include "/includes/footer.html" %}

• {{url_for()}}

- it can be for files
  <link rel="stylesheet" type="text/css" href="{{url_for('static',filename='css/main.css')}}">
- it can be point to routes function name 
      <li><a href="{{url_for('courses')}}">Courses</a></li>

• inherit the page using extends jinja syntax

{% extends "_Layout.html" %}

• we can block content, see below

{% block content %}
  
{% endblock %}

{{ self.content() }}

• request and response

# args
request.args.get('<field name>')
request.args['<field name>']

# forms
request.form.get('<field name>')
request.form['<field name>']