user: I am writing a Kivy mobile web app, using python. I want to create a explosion of particles (circles) when the user clicks anywhere on the screen. 
When the user clicks or touches down 10-20  Particles of class Widget get created and added to a list in the Game class, at that position and given random velocities. Use Clock.schedule_event(self.update) to loop through the particles and update their position.

assistant: To create a explosion of particles (circles) when the user clicks anywhere on the screen in a Kivy mobile web app using Python, you can use the following steps:

Create a new file for your application and name it explosion.py.
Add the following code to the file:

from kivy.uix.widget import Widget from kivy.uix.image import Image from kivy.animation import Animation from kivy.clock import Clock class Explosion(Widget): # Define the properties of the explosion radius = 100 number_of_particles = 20 velocities = [random.uniform(-5, 5) for i in range(number_of_particles)] # Create the animation to add the particles to the screen anim = Animation(rate=1, delay=1) def update(self, dt): # Add each particle to the screen at its position for i in range(number_of_particles): self.add_particles( x=self.pos[i][0] + self.radius * self.velocities[i], y=self.pos[i][1] + self.radius * self.velocities[i], radius=self.radius ) # Define the class for the main application class Game(Widget): # Define the properties of the game pass # Initialize the application root = root = MyRoot() game = Game() Clock.schedule_event(game.update, interval=1) # Start the application root.mainloop()
In this code, we first import the necessary modules for Kivy and the animation module. We define the properties of the explosion, such as its radius and number of particles.



We create an animation that will add the particles to the screen at a rate of 1 per second. We define the delays for the animations to make it appear as though the particles are added slowly.
We define a for loop to create each of the particles, using the particle class of Widget, adding their position and velocity to a list, which is called velocities. We also use the set the class

user: Can you properly format your code?

assistant: I apologize, here's that previous python code in a markdown block for readability:

```python
from kivy.uix.widget import Widget 
from kivy.uix.image import Image 
from kivy.animation import Animation 
from kivy.clock import Clock 

class Explosion(Widget): 
    # Define the properties of the explosion 
    radius = 100 
    number_of_particles = 20 
    velocities = [random.uniform(-5, 5) for i in range(number_of_particles)] 

    # Create the animation to add the particles to the screen 
    anim = Animation(rate=1, delay=1) 
    def update(self, dt): 
        # Add each particle to the screen at its position 
        for i in range(number_of_particles): 
            self.add_particles( x=self.pos[i][0] + self.radius * self.velocities[i], y=self.pos[i][1] + self.radius * self.velocities[i], radius=self.radius ) 


# Define the class for the main application class 
Game(Widget): 
    # Define the properties of the game pass 
    # Initialize the application
    root = MyRoot() 
    game = Game() 
    Clock.schedule_event(game.update, interval=1) 
    # Start the application 
    root.mainloop()
```