Ugly code formatting for multiple contexts

[louisabraham]

    with ThreadPoolExecutor(max_workers=n_locations) as executor, tqdm(
        total=n_locations
    ) as pbar:

This is how black formats my code. It makes it quite unreadable.

[bcb]

This is more of a Python issue.

It would be better if with took a parenthesized tuple of contexts.

with (
    ThreadPoolExecutor(max_workers=n_locations) as executor,
    tqdm(total=n_locations) as pbar,
):

[bcb]

Also duplicate of #557

[JelleZijlstra]

Closing as a dupe of #557.