Log if number of workers is changed

# standard imports

from datetime import datetime

import logging

import multiprocessing

import resource

from typing import Union

logger = logging.getLogger(__name__)

def clamp_max_workers(max_workers: Union[int, None]) -> int:

    """Calculate the number of max workers.

    """

    if max_workers is None:

        max_workers = 0

    return min(resource.RLIMIT_NPROC, max(1, multiprocessing.cpu_count() - 2)) if max_workers <= 0 else max_workers

    result = min(resource.RLIMIT_NPROC, max(1, multiprocessing.cpu_count() - 2)) if max_workers <= 0 else max_workers

    # log if the value was different than what was asked for

    if max_workers == 0 and result != max_workers:

        logger.info(f"Due to system load, setting maximum workers to {result}")

    return result

def to_time_str(value: datetime = datetime.now()) -> str: