import progressbar
import time

//定义进度条的显示样式
widgets = ["doing task: ", progressbar.Percentage()," ",
  progressbar.Bar(), " ", progressbar.ETA()]

//创建进度条并开始运行
pbar = progressbar.ProgressBar(maxval=100, widgets=widgets).start()

for i in range(1,101):
 time.sleep(1) 
 //更新进度
 pbar.update(i)

//结束进度条
pbar.finish()

from tqdm import tqdm
import time

for i in tqdm(range(100)):
 time.sleep(0.5)