using_images_as_turtles.py

import turtle
import random
import time

image_size = 125
falling_speed = 2
max_time_interval = 3

image = "snowflake-g3d31b3007_125.gif"

window = turtle.Screen()
window.bgcolor(0.7, 0.8, 0.9)
window.tracer(0)
window.register_shape(image)

# Create snowflakes and add to list
all_snow = []
def create_snow():
    snow = turtle.Turtle()
    snow.shape(image)
    snow.penup()
    snow.sety(window.window_height() / 2 + image_size)
    snow.setx(
        random.randint(
            -window.window_width() // 2,
            window.window_width() // 2,
        )
    )
    snow.setheading(-90)
    all_snow.append(snow)

# Animation loop
start = time.time()
interval = 0
while True:
    # Create new snowflake when time interval elapsed
    if time.time() - start > interval:
        create_snow()
        start = time.time()
        interval = random.random() * max_time_interval

    # Move all snowflakes
    for snow in all_snow.copy():
        snow.forward(falling_speed)
        # Remove snowflake if it leaves the screen
        if snow.ycor() < -window.window_height() / 2 - image_size:
            snow.hideturtle()
            all_snow.remove(snow)
            turtle.turtles().remove(snow)

    window.update()