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Build Your Dynamic Website with Flask

In this guide, I’ll walk you through how to create a simple but robust dynamic website using Flask, a popular micro web framework written in Python. It’s powerful, flexible, and perfect for small-scale projects.

Step 1: Install Flask

To kickstart this adventure, we need to install Flask. In your terminal, type pip install flask. After installing Flask, create a new Python file, and name it The ‘.py’ extension stands for Python.

Step 2: Creating a Flask Web Server

In your file, input the following codes:

from flask import Flask
app = Flask(__name__)

def home():
return 'Hello, world!'

if __name__ == "__main__":

In the context above, Flask is setting up a route at the home page of the web server, and when we navigate to the home page, it returns ‘Hello, world!’.

Step 3: Adding Dynamic Content

But our focus is to create a dynamic website. So, let’s add some dynamic content using dynamic routes. We’ll introduce Flask’s variable rules:

def show_user_profile(username):
return 'User %s' % username

Step 4: Run Your Server

Finally, let’s run our Flask application. In the terminal, type python and open a web browser. Navigate to, and you should see our ‘Hello, world!’.

Now, instead try You should see ‘User John’. That’s pretty cool, huh?

  • Flask lets you build dynamic websites very quickly and easily.
  • Understanding how Flask’s routing operates is essential.
  • Experiment and try to build more complex apps with Flask!


This 1-page guide introduces you to building a dynamic website with Flask. Flask is versatile enough for professional development yet simple enough for beginners. Ultimately, its dynamic nature is what makes it so powerful. Remember, the key to mastery is consistent practice. Stay curious and keep coding!

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