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：
import time
from tqdm import trange
for 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 tqdm
pbar = 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]
手动控制进度：
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]
更多用法，学习完后再补充：
https://blog.csdn.net/langb2014/article/details/54798823?locationnum=8&fps=1
