utils.py 文件源码

def max2(iterable, key=None):
    first = None
    second = None
    first_value = np.NINF
    second_value = np.NINF
    for v in iterable:
        n = key(v) if key is not None else v
        if n > first_value:
            second = first
            second_value = first_value
            first = v
            first_value = n
        elif n > second_value:
            second = v
            second_value = n
    return first, first_value, second, second_value