#coding:utf-8   

import os
import time

k = int(input("number of draws:\n"))
for x in range(0, k):
    os.system('clear')
    for i in range(0, x):
        for j in range(0, x-i, 1):
            print(' ', end='')
        for j in range(0, i*2+1):
            print('*', end='')
        print('\n')
    for i in range(x,-1,-1):
        for j in range(x-i,0,-1):
            print(' ', end='')
        for j in range(i*2+1,0,-1):
            print('*', end='')
        print('\n')   
    time.sleep(2)
                

実行結果