# 通过递归实现求n的阶乘def my_test(n): if n is 0: return 1 else: return n*my_test(n-1)print(my_test(5))>> 120# 通过普通循环实现求n的阶乘def my_test2(n): result = n for i in range(1,n): result *= i return resultprint(my_test2(5))>> 120