How to hot reload your python app flet tutorial

hot reloading is a feature that allows developers to see changes in their application immediately without needing to restart the entire program. this is particularly useful during development, as it speeds up the testing and debugging process. in this tutorial, we'll learn how to implement hot reloading in a python application using the flet library.

### what is flet?

flet is a framework that allows you to build interactive web, desktop, and mobile applications in python. it abstracts a lot of the complexity of building user interfaces, allowing developers to focus more on functionality.

### setting up your environment

before we get started, make sure you have python installed on your system and then install the flet library if you haven't already. you can do this using pip:

### hot reloading with flet

flet supports hot reloading out of the box, which means you can run your app, make changes to your code, and see the updates instantly without restarting the application.

#### creating a basic flet application

let's create a basic flet application to demonstrate hot reloading.

1. **create a new python file**

2. **write the initial code**



3. **run your application**

open your terminal and run the following command:



this will start the flet application and launch it in your web browser.

4. **test hot reloading**

- once the application is running, you should see a text field and a button labeled "greet."
- try entering your name and clicking the button to see the greeting.

5. **modify your code**

now, let's modify the code to change the greeting text. for instance, change the button text from "greet" to "say hello".

modify the `greet_button` line in your code as follows:



6. **save the changes**

after saving the changes, you should see the browser automatically refresh with the new button text without needing to restart the appl ...

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