IndexError:arrays used as indices must be of integer (or boolean) type问题解决

用numpy.ndarray类型作为index操作时，报错：IndexError:arrays used as indices must be of integer (or boolean) type，解决办法：

将numpy.ndarray对象加上：   要操作的array.astype('int64')

astype的作用是修改array元素的类型。