刷新stdout，实现滚动字幕

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用法： python this.py 10

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#!/usr/bin/env python
#coding:utf-8
'''

Author       :  ZZP
Mail         :  zhangzhaopeng@mail.nankai.edu.cn
Created Time :  2016-04-26 16:30:52

Description  : 

'''

import sys
import time
def move_words(string):
    length=int(2*len(string))
    dicc={}
    for i in range(len(string)-1):
        dicc[i]=i+1
    dicc[len(string)]=0
    for i in range(Size):
        time.sleep(0.5)
        tmp=""
        ind=i%len(string)
        char=string[ind]
        while(len(tmp)!=length):
            tmp+=char
            char=string[(ind+1)%len(string)]
            ind+=1
        print '\r%s' %(tmp),
        sys.stdout.flush()
    print 


if __name__ == '__main__':
    Size = int(sys.argv[1])
    string = r" i love you " #'abcdefghijklmnopqrstuvwxyz'
    move_words(string)