Show the progress of a Python multiprocessing pool imap_unordered call?

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My personal favorite — gives you a nice little progress bar and completion ETA while things run and commit in parallel.

from multiprocessing import Pool
import tqdm

pool = Pool(processes=8)
for _ in tqdm.tqdm(pool.imap_unordered(do_work, tasks), total=len(tasks)):
    pass

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