第十一章 循环-可以把复杂的循环问题拆分成简单的问题合并

循环-可以把复杂的循环问题拆分成简单的问题合并

1.倒计时部分

import time
for i in range(10,0,-1):
    print i
    time.sleep(1)

print "BLAST OFF"

2.输出*号部分

for i in range(4,0,-1):
    for j in range(0,i):
        print "*",
    print "\n"
    

3.合并

import time

Coun_timer = int(raw_input("Countdown timer: How many seconds ?"))
for i in range(Coun_timer,0,-1):
    print i,
    for j in range(0,i):
        print"*",
    print "\n"
    time.sleep(1)

print "Blast Off!"