-- coding: utf-8 --

def findMinAndMax(L): if len(L) == 0: return(None,None) elif len(L) == 1: return(L[0],L[0]) else: pass

minval = maxval = L[0]

for i in L:
    if i > maxval:
        maxval=i
    else: 
        minval=i
return (maxval,minval)