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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 cpu_percent(interval=0.1, per_cpu=False):
    '''
    Return the percent of time the CPU is busy.

    interval
        the number of seconds to sample CPU usage over
    per_cpu
        if True return an array of CPU percent busy for each CPU, otherwise
        aggregate all percents into one number

    CLI Example:

    .. code-block:: bash

        salt '*' ps.cpu_percent
    '''
    if per_cpu:
        result = list(psutil.cpu_percent(interval, True))
    else:
        result = psutil.cpu_percent(interval)
    return result