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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def usable_cpu_count():
 """Get number of CPUs usable by the current process. Takes into consideration cpusets restrictions. Returns ------- int """

    try:
        result = len(os.sched_getaffinity(0))
    except AttributeError:
        try:
            result = len(psutil.Process().cpu_affinity())
        except AttributeError:
            result = os.cpu_count()
    return result