[issue22013] Add at least minimal support for thread groups

[Claudiu Popa]

Claudiu Popa added the comment:

This seems indeed like a weaker version of ThreadPoolExecutor. Here's how your example looks with it, not very different and still easy to understand and grasp:


from concurrent.futures import ThreadPoolExecutor
from urllib.request import urlretrieve

with ThreadPoolExecutor(max_workers=3) as executor:
    url = 'http://www.{site}.org/'
    for site in ('perl', 'python', 'jython', 'pypy'):
        future = executor.submit(urlretrieve, url.format(site=site), site)



3 lines without imports and the initialisation of the pool.

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nosy: +Claudiu.Popa

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<http://bugs.python.org/issue22013>
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