Python简单进度条示例

# coding=utf-8

import sys
import 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 -= 1

demo1()
demo2()

import time
import thread
import sys

class 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()