Python使用progressbar模块实现的显示进度条功能

本文实例讲述了Python使用progressbar模块实现的显示进度条功能。分享给大家供大家参考，具体如下：

progressbar安装：

pip install progressbar

用法一

# -*- coding=utf-8 -*-import timefrom progressbar import *total = 1000def dosomework():  time.sleep(0.01)progress = ProgressBar()for i in progress(range(1000)):  dosomework()

显示效果：

5% |###                                                                      |
100% |#########################################################################|

用法二

# -*- coding=utf-8 -*-from __future__ import divisionimport sys, timefrom progressbar import *total = 1000def dosomework():  time.sleep(0.01)pbar = ProgressBar().start()for i in range(1000):  pbar.update(int((i / (total - 1)) * 100))  dosomework()pbar.finish()

显示效果：

39% |##############################                                               |
100% |#############################################################################|

用法三

# -*- coding=utf-8 -*-import timefrom progressbar import *total = 1000def dosomework():  time.sleep(0.01)widgets = ['Progress: ',Percentage(), ' ', Bar('#'),' ', Timer(),      ' ', ETA(), ' ', FileTransferSpeed()]pbar = ProgressBar(widgets=widgets, maxval=10*total).start()for i in range(total):  # do something  pbar.update(10 * i + 1)  dosomework()pbar.finish()

显示效果：

Progress:   3% |###                                                                                | Elapsed Time: 0:00:15 ETA: 0:09:02 919.67  B/s
Progress: 100% |###################################################################################| Elapsed Time: 0:10:10 Time: 0:10:10 917.42  B/s

widgets可选参数含义：

'Progress: ' ：设置进度条前显示的文字