concurrent.futures help

[Yoriz]

submit(fn, /, *args, **kwargs)
Schedules the callable, fn, to be executed as fn(*args **kwargs) and returns a Future object representing the execution of the callable

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map(func, *iterables, timeout=None, chunksize=1)
Similar to map(func, *iterables) except:

• The iterables are collected immediately rather than lazily;
  
• func is executed asynchronously and several calls to func may be made concurrently.
  

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I used ThreadPoolExecutor as ProcessPoolExecutor never works for me

from concurrent.futures import ThreadPoolExecutor


def func(value):
    return str(value)


with ThreadPoolExecutor() as executor:

    results = []
    for number in range(50):
        results.append(executor.submit(func, number))


print([result.result() for result in results])

with ThreadPoolExecutor() as executor:
    results = list(executor.map(func, range(50)))

print(results)

Output:
['0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '10', '11', '12', '13', '14', '15', '16', '17', '18', '19', '20', '21', '22', '23', '24', '25', '26', '27', '28', '29', '30', '31', '32', '33', '34', '35', '36', '37', '38', '39', '40', '41', '42', '43', '44', '45', '46', '47', '48', '49']
['0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '10', '11', '12', '13', '14', '15', '16', '17', '18', '19', '20', '21', '22', '23', '24', '25', '26', '27', '28', '29', '30', '31', '32', '33', '34', '35', '36', '37', '38', '39', '40', '41', '42', '43', '44', '45', '46', '47', '48', '49']