python 进度条详解编程语言

#!/usr/bin/env python 
# -*- coding:utf-8 -*-  
import sys,time 
for a in range(101): 
    #print a 
    b = 100 -a 
    #print b 
    #sys.stdout.write(("/r[%s%s]%0.2f%%" %("#"*a,b*"",float(a)))) 
    sys.stdout.write(("/r[%s%s]%0.2f%%"%("#"*a,b*" ",float(a)))) 
    sys.stdout.flush() 
    time.sleep(0.1)