python模块详解 | progressbar

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参考官方文档：https://pypi.org/project/progressbar/#description

progressbar 安装

pip install progressbar

progressbar.ProgressBar() 可选参数

maxval = None
widgets = None
term_width = None
poll:int = 1
left_justify:bool = True
fd = None

例:
progressbar.ProgressBar(widgets=widgets, maxval)

widgets 可选参数

'Progress: ' ：设置进度条前显示的文字
Percentage() ：显示百分比
Bar('#') ： 设置进度条形状
ETA() ： 显示预计剩余时间
Timer() ：显示已用时间
FileTransferSpeed() ：显示传输速度

例:
widgets = ['Progress: ', Percentage(), ' ', Bar('#'), ' ', Timer(), ' ', ETA(), ' ',FileTransferSpeed()] bar = ProgressBar(widgets=widgets, maxval=total)

#写法1
import time,progressbar
dowork=lambda:time.sleep(0.01)
bar = progressbar.ProgressBar()
for i in bar(range(1000)):
  dowork()

#写法2
import time,progressbar
dowork=lambda:time.sleep(0.01)
bar = progressbar.ProgressBar()
bar.start()

for i in range(100):
    bar.update(i+1)　　#int((i / (total - 1)) * 100)
    dowork()

bar.finish()#注意，一定要加这句话

import time
from progressbar import *
total = 100
dowork=lambda:time.sleep(0.01)
widgets = ['Progress: ', Percentage(), ' ', Bar('#'), ' ', Timer(), ' ', ETA(), ' ',FileTransferSpeed()]
bar = ProgressBar(widgets=widgets, maxval=total)
bar.start()#

for i in range(total):
  bar.update(i+1)
  dowork()

bar.finish()

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