python：while 语句的使用方法

while语句：

count = 0 while True: print(count) count += 1
    if count == 10: break

实例：

计算n！，若：n = 5；则：n! = 5 * 4 * 3 * 2 * 1

#n!
n = int(input("输入n：")) number = n while True: if number == 1: break number = number * (n-1) n -= 1
    if n <= 2: break
print(number)