def _max(l): if l == []: return (None,None) max = l[0] min = l[0] for n in l: if not isinstance(n,(int,float)): raise TypeError('bad operand type') if n>max: max=n if n<min: min=n return min,max
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大明湖畔的卡耐基
def _max(l): if l == []: return (None,None) max = l[0] min = l[0] for n in l: if not isinstance(n,(int,float)): raise TypeError('bad operand type') if n>max: max=n if n<min: min=n return min,max