python实现进度条
- 2020 年 1 月 14 日
- 筆記
import sys import time def view_bar(num, total): rate = num / total rate_num = int(rate * 100) r = 'r[%s%s]%d%% ' % ("="*num, " "*(100-num), num, ) sys.stdout.write(r) sys.stdout.flush() #在python中，输出stdout(标准输出)可以使用sys.stdout.write if __name__ == '__main__': for i in range(0, 101): time.sleep(0.1) view_bar(i, 100) ============================================================================== import os,sys,string import time def view_bar(num=1, sum=100, bar_word=":"): rate = float(num) / float(sum) rate_num = int(rate * 100) print 'r%d%% :' %(rate_num), for i in range(0, num): os.write(1, bar_word) sys.stdout.flush() if __name__ == '__main__': for i in range(0, 101): time.sleep(0.1) view_bar(i, 100) ========================================================================== import sys, time for i in range(5): sys.stdout.write(' ' * 10 + 'r') sys.stdout.flush() print i sys.stdout.write(str(i) * (5 – i) + 'r') sys.stdout.flush() time.sleep(1) ========================================================================== import time import progressbar p = progressbar.ProgressBar() N = 1000 for i in p(range(N)): time.sleep(0.01) ============================================================================== import time import progressbar p = progressbar.ProgressBar() N = 1000 p.start(N) for i in range(N): time.sleep(0.01) p.update(i+1) p.finish() ================================================================================= import time import progressbar bar = progressbar.ProgressBar(widgets=[ ' [', progressbar.Timer(), '] ', progressbar.Percentage(), ' (', progressbar.ETA(), ') ', ]) for i in bar(range(1000)): time.sleep(0.01) #说明如下 'Timer', # 计时器 'ETA', # 预计剩余时间 'AbsoluteETA', # 预计结束的绝对时间，耗时很长时使用较方便 'Percentage', # 百分比进度，30% 'SimpleProgress', # 计数进度，300/1000 'Counter', # 单纯计数 'Bar' # “#”号进度条 ==================================================================================== import time import progressbar bar = progressbar.ProgressBar(widgets=[ progressbar.Percentage(), ' (', progressbar.SimpleProgress(), ') ', ' (', progressbar.AbsoluteETA(), ') ',]) for i in bar(range(1000)): time.sleep(0.01)
