Creating an app using Python is a great way to leverage the power of this versatile programming language. There are various libraries and frameworks available in Python that simplify the process of creating web applications, desktop applications, or mobile apps. In this introduction, we'll focus on creating a simple web app using the Flask framework.
Flask is a micro web framework for Python that allows you to build web applications quickly and easily. It has a small and easy-to-extend core, which makes it a popular choice for building web applications in Python.
Here's a step-by-step guide to creating a basic Flask web app:
Install Python:
Ensure you have Python installed on your machine. If not, download and install it from https://www.python.org/downloads/.
Install Flask:
Open a terminal or command prompt, and run the following command to install Flask:
Create a new directory for your Flask app:
Create a new folder to store your Flask app files, and navigate to it in the terminal or command prompt.
Create a Python script:
Create a new Python script in your app directory (e.g., app.py) and open it in your favorite text editor or IDE.
Write the Flask app code:
Add the following code to your app.py script:
This code imports the Flask class, creates an instance of it, defines a route for the root URL ("/"), and runs the app with debug mode enabled.
Run the Flask app:
In your terminal or command prompt, run the following command to start your Flask app:
Open the app in a web browser:
Your Flask app should now be running on your local machine. Open your web browser and navigate to http://127.0.0.1:5000/. You should see the "Hello, World!" message displayed.
Congratulations! You've just created a simple web app using Python and Flask. From here, you can expand your app to include more advanced features like database integration, user authentication, and more by exploring Flask's extensive documentation and available extensions.
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