In this lesson, you'll learn how to handle GET and POST requests in Flask, which are essential for building interactive web applications.

GET requests are used to retrieve data, while POST requests are used to send data to the server, like submitting a form. You'll build on your knowledge from previous Flask lessons by creating an app that manages both types of requests. Here's what you'll do:

1. Set up a new project folder and environment.
2. Create a basic Flask app with a GET route.
3. Add a form to handle POST requests.
4. Process data from POST requests.
5. Test and debug your app.

By the end, you'll understand how to manage user inputs and responses in a web backend.

To begin, create a dedicated folder for this lesson's project to keep everything organised.

1. On your computer, create a new folder named 'FlaskRequests'. You can place it in your Documents folder or any preferred location.
2. Open VS Code and go to File > Open Folder, then select the 'FlaskRequests' folder.

Create a virtual environment to manage your project's dependencies separately.

1. Open the Command Palette: View > Command Palette.
2. Type 'Python: Create Environment' and select it.
3. Choose 'Venv' as the type.
4. Select your installed Python version.
5. VS Code will create a '.venv' folder in 'FlaskRequests'.

Now, open a terminal in VS Code to install Flask if it's not already installed.

1. Go to the menu: View > Terminal
2. This opens the Terminal panel at the bottom of VS Code.
3. In the terminal, run: pip install flask
4. Wait for the installation to complete.

Let's create a simple Flask app that handles a GET request.

In VS Code, create a file named 'app.py' in 'FlaskRequests'.

Add the following code:

from flask import Flask

app = Flask(__name__)

@app.route('/')
def home():
    return 'Welcome to Handling Requests Lesson! This is a GET request.'