def findMinAndMax(L): if L==[]: return (None, None) min=max=L[0] for n in L: if n<min: min=n if n>max: max=n return(min,max)
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def findMinAndMax(L): if L==[]: return (None, None) min=max=L[0] for n in L: if n<min: min=n if n>max: max=n return(min,max)