python 中有趣的库tqdm

Tqdm 是 Python 进度条库，可以在 Python 长循环中添加一个进度提示信息用法：tqdm(iterator)

方法1：

import time from tqdm import tqdm for i in tqdm(range(100)): time.sleep(0.01)

方法2：

''' 遇到问题没人解答？小编创建了一个Python学习交流QQ群：857662006 寻找有志同道合的小伙伴，互帮互助,群里还有不错的视频学习教程和PDF电子书！ ''' import time from tqdm import trangefor i in trange(100):time.sleep(0.01)

结果：

0%| | 0/100 [00:00<?, ?it/s]11%|█ | 11/100 [00:00<00:00, 100.00it/s]22%|██▏ | 22/100 [00:00<00:00, 100.00it/s]32%|███▏ | 32/100 [00:00<00:00, 100.00it/s]43%|████▎ | 43/100 [00:00<00:00, 100.00it/s]54%|█████▍ | 54/100 [00:00<00:00, 100.00it/s]64%|██████▍ | 64/100 [00:00<00:00, 99.11it/s] 74%|███████▍ | 74/100 [00:00<00:00, 99.37it/s]85%|████████▌ | 85/100 [00:00<00:00, 99.56it/s]95%|█████████▌| 95/100 [00:00<00:00, 99.69it/s] 100%|██████████| 100/100 [00:01<00:00, 99.70it/s]

可以为进度条设置描述：

import time from tqdm import tqdmpbar = tqdm(["a", "b", "c", "d"]) for char in pbar: # 设置描述pbar.set_description("Processing %s" % char)time.sleep(1)

结果：

0%| | 0/4 [00:00<?, ?it/s] Processing a: 25%|██▌ | 1/4 [00:01<00:03, 1.00it/s] Processing b: 50%|█████ | 2/4 [00:02<00:02, 1.00it/s] Processing c: 75%|███████▌ | 3/4 [00:03<00:01, 1.00it/s] Processing d: 100%|██████████| 4/4 [00:04<00:00, 1.00it/s] ''' 遇到问题没人解答？小编创建了一个Python学习交流QQ群：857662006 寻找有志同道合的小伙伴，互帮互助,群里还有不错的视频学习教程和PDF电子书！ ''' import time from tqdm import tqdm# 一共200个，每次更新10，一共更新20次 with tqdm(total=200) as pbar:for i in range(20):pbar.update(10) time.sleep(0.1)#方法2： pbar = tqdm(total=200) for i in range(20): pbar.update(10)time.sleep(0.1) # close() 不要也没出问题？ pbar.close()

结果：

0%| | 0/200 [00:00<?, ?it/s]15%|█▌ | 30/200 [00:00<00:01, 150.00it/s]25%|██▌ | 50/200 [00:00<00:01, 130.43it/s]30%|███ | 60/200 [00:00<00:01, 119.52it/s]40%|████ | 80/200 [00:00<00:01, 112.91it/s]50%|█████ | 100/200 [00:00<00:00, 108.70it/s]55%|█████▌ | 110/200 [00:01<00:00, 105.93it/s]65%|██████▌ | 130/200 [00:01<00:00, 104.08it/s]75%|███████▌ | 150/200 [00:01<00:00, 102.82it/s]80%|████████ | 160/200 [00:01<00:00, 101.96it/s]85%|████████▌ | 170/200 [00:01<00:00, 96.38it/s] 90%|█████████ | 180/200 [00:01<00:00, 97.44it/s] 100%|██████████| 200/200 [00:01<00:00, 98.19it/s]

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