from turtle import *
from superturtle.animation import animate
from random import random, seed

HOW_FAR_BUBBLES_GO = 400

def random_bubble_x():
    return -200 + 400 * random()

def random_bubble_y():
    return -200 + 400 * random()

def random_bubble_size():
    return 10 + 40 * random()

def generate_bubble_positions(n):
    bubble_positions = []
    for i in range(n):
        x = random_bubble_x()
        y = random_bubble_y()
        r = random_bubble_size()
        bubble_positions.append([x, y, r])
    return bubble_positions

def draw_bubbles(bubble_positions, frame):
    for x, y, r in bubble_positions:
        with frame.translate([x, y], [x, y + HOW_FAR_BUBBLES_GO]):
            circle(r)

number_of_bubbles = 25
bubble_positions = generate_bubble_positions(number_of_bubbles)
for frame in animate(100):
    draw_bubbles(bubble_positions, frame)