Double Progress Bar in Python
progress-bar, python
Solution
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)
Problem
Is there a way to create a double progress bar in Python? I want to run two loops inside each other. For each loop I want to have a progress bar. My program looks like: ``` import time for i1 in range(5): for i2 in range(300): # do something, e.g. sleep time.sleep(0.01) # update upper progress bar # update lower progress bar ``` The output somewhere in the middle should look something like ``` 50%|############################ |ETA: 0:00:02 80%|################################################## |ETA: 0:00:04 ``` The already existing really cool progressbar module doesn't seem to support that.