Double Progress Bar in Python

Use the nested progress bars feature of tqdm, an extremely low overhead, very customisable progress bar library:

$ pip install -U tqdm

Then:

from tqdm import tqdm
# from tqdm.auto import tqdm  # notebook compatible
import time
for i1 in tqdm(range(5)):
    for i2 in tqdm(range(300), leave=False):
        # do something, e.g. sleep
        time.sleep(0.01)

(The leave=False is optional – needed to discard the nested bars upon completion.)

You can also use from tqdm import trange and then replace tqdm(range(...)) with trange(...). You can also get it working in a notebook.

Alternatively if you want just one bar to monitor everything, you can use tqdm‘s version of itertools.product:

from tqdm.contrib import itertools
import time
for i1, i2 in itertools.product(range(5), range(300)):
    # do something, e.g. sleep
    time.sleep(0.01)