def findMinAndMax(L): if L==[]:
####if L=='':#错是因为,传入的L是list,我这样写,就相当于是字符串了,所以会报list index out of range return(None,None) else: min=L[0] max=L[0] for i in L: if i<min: min=i elif i>max: max=i return (min, max)
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严肃的笨小孩
def findMinAndMax(L): if L==[]: