You ever wanted to create your own web application, but did not know where to start? Flask, easy and easy to use the Python web structure, is the perfect choice for both beginners and experienced developers. Regardless of whether you want to create a personal blog, a portfolio site or even a web application controlled by data, Flask will help you. In this leadership, we will lead you through the entire process of creating a simple, but functional web application using a flask.
What is a flask?
Flask is a micro -structure written on Python. Unlike Django, which comes with many built -in functions, the flask is minimalistic and gives you full control over your application. Here are a few key advantages of using the flask:
- Light and flexible: You add only the necessary components.
- Easy to study: Simple syntax and minimum cotel.
- Scalable: Suitable for small projects and large applications.
- Expanding: Easily integrates with databases, API and other tools.
Preliminary conditions
Before we plunge into encoding, make sure that you have the following:
- Python (recommended version 3.x)
- Flask Framework – Install using PIP installed flask
- Code editor – vs Code, Pycharm or any text editor from your choice
- Python’s main knowledge
How to build a web application for Python Python?
Step 1: Settailing of the Kobe project
1.1 Create a new project catalog
First, create a new folder for your FLASK project and go to it using the terminal:
1.2 Create a virtual environment (optional, but recommended)
Virtual environments help effectively manage addictions. Launch the next command:
1.3 Install the flask
Now install the flask in a virtual environment:
2.1 Writing your first FLASK application
Inside the project folder, create a new file named App.py and add the following code:
2.2 Launch of the application
Save the file and run the next command in the terminal:
You should see such a way out:
Step 3: Adding HTML templates
FLASK allows you to display HTML cloths using Jinja2, a powerful matrix. Let’s create the main HTML page.
3.1 Create a folder of templates
In your project catalog, create a folder named templates. Then create a file named Index.html inside the templates and add the following code:
3.2 Change App.py to display a template
Update your App.py file to use the template:
Run the application again and update your browser. You must see a visualized HTML page!
Step 4: Adding dynamic routes and forms
FLASK allows you to process dynamic routes and user input using forms.
4.1 Creating a dynamic route
Change App.py to enable the dynamic route:
4.2 Processing of forms
Step 5: Deployment of an application for a flask
As soon as you are satisfied with your FLASK application, you can expand it on the Internet. Popular options include:
- Heroku (free level is available)
- Pythonanywhere
- AWS, Google Cloud or Azure
- To expand to Heroku, follow these steps:
Conclusion
Congratulations! You have just created and deployed a web application of Flask from scratch. The possibilities are endless with flasks. You can integrate databases, authentication, API and much more. Continue to experiment, and soon you will create full-fledged web applications without much effort!
If you have found this guide useful, do not forget to share it with others who want to learn the flask. Happy coding!