python 笔记6 循环结构

#1.py
break 终止循环
exit() 整个代码结束

#!/usr/bin/python
s='hello'
l=[1,2,3,'a','b']
t=(7,8,9,'x','y')
d={1:111,2:222,3:333,5:555}
for x in range(1,11):
     print  x
      if x==2 :
            print  "hello 222"
            continue
      if x==5 :
            exit()
     if (x==6):
       break
    else :  print  "#"*5    //输出5个#
else : print "ending"
for x in range(1,11):
     print "-------->",x

#2.py

#!/usr/bin/python
#time yanshi
import time
s='hello'
l=[1,2,3,'a','b']
t=(7,8,9,'x','y')
d={1:111,2:222,3:333,5:555}
for x in range(1,11):
     print  x
     time.sleep(1)

#3.py       "q"退出循环

#!/usr/bin/python
while 1:
    print "hello"
    x=raw_input("please input something ,q for quit:")
    if x=="q" :
        break

#4.py

#!/usr/bin/python
x=" "    // 这里x初始化为空
while x !="q" :
    print "hello"
    x=raw_input("please input something ,q for quit:")

#5.py

#!/usr/bin/python
x=" "
while x !="q" :
    print "hello"
    x=raw_input("please input something ,q for quit:")
     if x=="c" :
         continue
     print "one more time~~~~~"
else :
    print "ending.........."

              python 1.py
hello
please input something ,q for quit:aaa
one more time~~~~~
hello
please input something ,q for quit:c
hello
please input something ,q for quit:aaa
one more time~~~~~
hello
please input something ,q for quit:q
one more time~~~~~
ending..........