Flask 2.0 Released with Async Support! #Shorts

Flask 2.0 has officially been released, bringing with it many exciting new features and improvements. One of the most anticipated features is the addition of async support, allowing developers to write asynchronous code in their Flask applications. In this tutorial, I will explain how to take advantage of this new feature in Flask 2.0.

To get started, you will need to install Flask 2.0. You can do this using pip by running the following command:

pip install Flask~=2.0

Once you have Flask 2.0 installed, you can start creating a new Flask application with async support. To do this, create a new Python file (e.g., app.py) and import the necessary modules:

from flask import Flask

Next, create an instance of the Flask class:

app = Flask(__name__)

Now, let’s define a route that will return "Hello, World!" asynchronously. To do this, we use the @app.route decorator along with the async keyword:

@app.route('/')
async def hello_world():
    return 'Hello, World!'

In this example, the hello_world function is defined as asynchronous using the async keyword. This allows the function to perform non-blocking operations, such as making API calls or querying a database, without blocking the main thread.

Finally, run the Flask application by adding the following code at the end of the file:

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

Now, you can start the Flask application by running the Python file:

python app.py

You should see the message "Running on http://127.0.0.1:5000/" in the console. Open your web browser and navigate to this URL to see the message "Hello, World!" displayed on the page.

Congratulations! You have successfully created a Flask application with async support in Flask 2.0. This new feature allows you to write more efficient and scalable web applications by leveraging asynchronous programming techniques.

I hope this tutorial has been helpful in getting you started with Flask 2.0 and async support. Happy coding!