Python实现进度条总结

找了一半天，始终没有找到自己满意的进度条。皇天不负有心人，找到了以为博主总结的进度条。

我的python是3.6，windows10系统，在Spyder运行成功！

先说一下文本系统的控制符：\r：   将光标移动到当前行的首位而不换行；\n：   将光标移动到下一行，并不移动到首位；\r\n： 将光标移动到下一行首位。     环境：root@ubuntu16:/alex/py/jingdutiao# python3Python 3.5.2 (default, Jul  5 2016, 12:43:10)[GCC 5.4.0 20160609] on linuxType "help", "copyright", "credits" or "license" for more information.>>>     方式1：root@ubuntu16:/alex/py/jingdutiao# cat test1.py#!/usr/bin/env pythonfrom __future__ import divisionimport sys,timej = '#'if __name__ == '__main__':  for i in range(1,61):    j += '#'    sys.stdout.write(str(int((i/60)*100))+'% '+j+'->'+ "\r")    sys.stdout.flush()    time.sleep(0.5)print root@ubuntu16:/alex/py/jingdutiao# python3 test1.py98% ############################################################->  方式2：root@ubuntu16:/alex/py/jingdutiao# cat test4.py#!/usr/bin/env python# -*- coding:utf-8 -*-__author__ = 'l' import sysfrom time import sleepdef viewBar(i):    """    进度条效果    :param i:    :return:    """    output = sys.stdout    for count in range(0, i + 1):        second = 0.1        sleep(second)        output.write('\rcomplete percent ----->:%.0f%%' % count)    output.flush() viewBar(100)root@ubuntu16:/alex/py/jingdutiao# python3 test4.pycomplete percent ----->:100%  方式3：tqdm模块    tqdm是一个快速、扩展性强的进度条工具库，    其githup地址：https://github.com/tqdm/tqdm     1）安装：直接使用pip安装：    pip install tqdm2）使用：from time import sleepfrom tqdm import tqdmfor i in tqdm(range(1, 500)):    sleep(0.01)     自己实操：在ubuntu上默认安装到2.7环境变量里去了root@ubuntu16:/alex/py/jingdutiao# pip install tqdmCollecting tqdm  Downloading tqdm-4.8.4-py2.py3-none-any.whlInstalling collected packages: tqdmSuccessfully installed tqdm-4.8.4You are using pip version 8.1.1, however version 8.1.2 is available.You should consider upgrading via the 'pip install --upgrade pip' command. pip install --upgrade pippip install tqdmpip -Vcd /usr/local/lib/python2.7/dist-packages/cp -r  tqdm tqdm-4.8.4.dist-info/ /usr/local/lib/python3.5/dist-packagesroot@ubuntu16:/alex/py/jingdutiao# cat test5.pyfrom time import sleepfrom tqdm import tqdmfor i in tqdm(range(1, 500)):    sleep(0.01)root@ubuntu16:/alex/py/jingdutiao# python3  test5.py100%|████████████████████████████████████████████████████████████████████████| 499/499 [00:05<00:00, 92.20it/s   方式4：root@ubuntu16:/alex/py/jingdutiao# cat   test2.py class ProgressBar():  def __init__(self, width=50):    self.pointer = 0    self.width = width  def __call__(self,x):     # x in percent     self.pointer = int(self.width*(x/100.0))     return "|" + "#"*self.pointer + "-"*(self.width-self.pointer)+ "|\n %d percent done" % int(x) if __name__ == '__main__':    import time,ospb = ProgressBar()for i in range(101):    os.system('clear')    print( pb(i))    time.sleep(0.1) root@ubuntu16:/alex/py/jingdutiao#执行结果：|#################################################-|percent done|##################################################|   #输出100行内容，但是在屏幕会实时清屏，只展示1行percent done  方式5：root@ubuntu16:/alex/py/jingdutiao# python3   test3.py====================================================================================================>100%#cat test3.pyimport sysimport timedef view_bar(num,total):    rate = num / total    rate_num = int(rate * 100)    #r = '\r %d%%' %(rate_num)    r = '\r%s>%d%%' % ('=' * rate_num, rate_num,)    sys.stdout.write(r)    sys.stdout.flushif __name__ == '__main__':    for i in range(0, 101):        time.sleep(0.1)        view_bar(i, 100)