2 初学函数，求阶乘练手程序

 1 def jiecheng(num,zhishu):
 2     """
 3     求一个数的阶乘
 4     :param num:
 5     :param zhi:
 6     :return:
 7     """
 8     print(‘结果是：‘)
 9     restult = num ** zhi
10     return restult
11 
12 while 1:
13     num = input(‘一个数\（输入q退出程序）:‘)
14     if num.lower() ==‘q‘:
15         break
16     else:
17         num = int(num)
18     zhi = int(input(‘请输入这个数的指数：‘))
19     res = jiecheng(num,zhishu)
20     print(‘最后的结果是:‘+ str(res))