flask python tutorial pdf

Published: 04 February 2024
on channel: CodeTime

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Title: Getting Started with Flask: A Python Web Framework - PDF Tutorial with Code Examples
Flask is a lightweight and versatile Python web framework that allows developers to build web applications quickly and efficiently. In this tutorial, we will guide you through the process of setting up a basic Flask application and demonstrate key concepts using code examples. By the end, you'll have a solid foundation to create your own web applications with Flask.
Make sure you have the following installed on your system:
First, let's install Flask using pip. Open your terminal or command prompt and run:
This command will download and install Flask and its dependencies.
Now that Flask is installed, let's create a simple "Hello, Flask!" application.
Create a file named app.py using your preferred text editor.
Open app.py and add the following code:
Save the file.
To run your Flask application, execute the following command in the terminal (make sure you are in the project directory):
Visit http://localhost:5000 in your web browser, and you should see the message "Hello, Flask!" displayed.
Flask uses routes to map URLs to functions. Let's extend our application to handle different routes.
Visit http://localhost:5000/about to see the new route in action.
Flask supports HTML templates for rendering dynamic content. Let's create a simple template for our "about" page.
Create a folder named templates in your project directory.
Inside the templates folder, create a file named about.html with the following content:

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