简单实现python进度条脚本

# coding=utf-8import sysimport time# width:宽度，  percent:百分比def progress(width, percent):  print "/r%s %d%%" % (('%%-%ds' % width) % (width * percent / 100 * '='), percent),  if percent >= 100:    print    sys.stdout.flush()# 示例一、0%--100%def demo1():  for i in xrange(100):    progress(50, (i + 1))    time.sleep(0.1)## 示例二、周期加载def demo2():  i = 19  n = 200  while n > 0:    print "/t/t/t%s /r" % (i * "="),    i = (i + 1) % 20    time.sleep(0.1)    n -= 1demo1()demo2()

import timeimport threadimport sysclass Progress:  def __init__(self):    self._flag = False  def timer(self):    i = 19    while self._flag:      print "/t/t/t%s /r" % (i * "="),      sys.stdout.flush()      i = (i + 1) % 20      time.sleep(0.05)    print "/t/t/t%s/n" % (19 * "="),    thread.exit_thread()  def start(self):    self._flag = True    thread.start_new_thread(self.timer, ())  def stop(self):    self._flag = False    time.sleep(1)

progress = Progress()progress.start()time.sleep(5)progress.stop()