Python Flask Primer In the Pycharm Professional Environment. Cookies!

Flask is a popular simple and easy to learn framework for building interactive websites to handle forms, logins and pretty much anything you might use on the internet.

• Used heavily by companies such as Samsung, Netflix, Trivago, and Reddit -  1000's of jobs list Flask as part of the requiem required. It is used and popular!

Let's get started.

Pycharm has native support for Flask. Starting a new project is this easy:

A small template will be built for you, and it is automatically setup to serve on Port 5000:

from flask import Flask

app = Flask(__name__)


@app.route('/')
def hello_world():  # put application's code here
    return 'Hello World!'


if __name__ == '__main__':
    app.run()

A basic explanation:

@app.route('/') 

Is a simple decorator that if one accesses the main page in this case:

http://127.0.0.1:5000/

It will serve the content 'Hello World!'

• It should be noted that Pycharm Professional really 'takes over' the handling of the port. Even with:

testing = False

if __name__ == '__main__':
    app.run(host='0.0.0.0', port=8080, debug=True)

It was still found to serve from port 5000, ignoring the app.run section of the code. We are required to run it in a separate terminal, even the Pycharm guide did not work:

flask run -h localhost -p 8080 

Generating html requests.

Pycharm Professional is powerful! You can easily generate a html request by clicking on the world icon as in:

Another entire will be created with a GET html set:

Each time you run it - it will have a time stamped reference of what each page looked like. It lets you modify the code and see the differential outputs:

..to be continued