Как выводить снежинки снизу вверх?

from random import *
import time
def generation(number_of_snowflakes):
    while True:
        spisok=[' ' for i in range(number_of_snowflakes)]
        index=randint(0,number_of_snowflakes-1)
        del spisok[index]
        a=randint(0,101)
        if a<100:
            spisok.insert(index, '*')
        else:
            spisok.insert(index, 'Happy new year!!!')
        print(''.join(spisok))
        time.sleep(0.1)
 
generation(int(input()))

from random import randint
import time
 
 
def generation(number_of_snowflakes):
    while True:
        spisok = [' ' for i in range(number_of_snowflakes)]
        index=randint(0,number_of_snowflakes-1)
        del spisok[index]
        a = randint(0, 103)
        if a < 100:
            spisok.insert(index, '*')
        else:
            spisok.insert(index, 'Happy new year!!!')
        print(''.join(spisok))
        time.sleep(0.1)
 
generation(11)