Python案例-开发之路-进度条实现

#!/usr/bin/env python
# coding = 'utf-8'
#Author Allen Lee,at 20160611
import sys
def view_bar(num,total):
ret = num / total
ag = int(ret * 100)
#\r 可以让光标处于输入行的首位
ab = "\r [%-100s]%d%%" %( '='*num,ag, )
sys.stdout.write(ab)
sys.stdout.flush()

if __name__ == '__main__':
for i in range(101):
time.sleep(0.1)
view_bar(i,100)