fromskimage.measureimportblock_reduce>>>image=np.arange(3*3*4).reshape(3,3,4)>>>imagearray([[[0,1,2,3],[4,5,6,7],[8,9,10,11
/[0-9a-f]/.match('9f')#=>#<MatchData"9">/[9f]/.match('9f')#=>#<MatchData"9"> 如果字符类的第一个字符是caret(^),则该类将被反转