Python添加进度条tqdm进阶使用实例

for i in range(100):
    do_something()  # 这里做某些事

from tqdm import trange
for i in trange(100):
    do_something()
输出
  5%|██▌                                                 | 5/100 [00:05<01:35,  1.01s/it]

pip install tqdm

❯ python --version
Python 3.7.0
>>> tqdm.__version__
'4.59.0'

>>> a = ['a', 'b', 'c'] * 10000
>>> from tqdm import tqdm
>>> for i in tqdm(a):
...     pass
...
100%|███████████| 30000/30000 [00:00<?, ?it/s]
>>>

import random
import time
class Task:
    def __init__(self) -> None:
        self.jobs = int(1e3)
    @property
    def job_done(self) -> bool:
        return self.jobs <= 0
    def do_job(self) -> int:
        time.sleep(1)
        job_minus = random.randint(1, 50)
        self.jobs = max(0, self.jobs - job_minus)
        return job_minus

from tqdm import tqdm
task: Task = Task()
info = { 'efficiency': None }
with tqdm(
    total=task.jobs, desc='Doing jobs'
) as t:
    while not task.job_done:
        job_minus = task.do_job()
        info['efficiency'] = job_minus
        t.update(job_minus)
        t.set_postfix(info)

❯ python .\example.py
Doing jobs:   9%|██▏                    | 94/1000 [00:03<00:28, 31.73it/s, efficiency=30]