utils.py 文件源码

python
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项目:robocup-soccer 作者: kengz 项目源码 文件源码
def median(values):
    """Return the middle value, when the values are sorted.
    If there are an odd number of elements, try to average the middle two.
    If they can't be averaged (e.g. they are strings), choose one at random.
    >>> median([10, 100, 11])
    11
    >>> median([1, 2, 3, 4])
    2.5
    """
    n = len(values)
    values = sorted(values)
    if n % 2 == 1:
        return values[n/2]
    else:
        middle2 = values[(n/2)-1:(n/2)+1]
        try:
            return mean(middle2)
        except TypeError:
            return random.choice(middle2)
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