#!/usr/bin/env python# -*- coding:utf-8 -*- import sys,timefor 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)