[py]не соображаю

>>> Y=[[0,100.5,0],[0,0,0]]
>>> Y[0].index(max(Y[0]))
1

>>> print(M[0])
[ 25.08962456  17.837197    27.08227643 ...,   2.59576787   2.13519845
   0.84001924]
print(max(M[0]))
440.51324597
print(M[0].index(max(M[0])))
Traceback (most recent call last):
  File "./fft.py", line 46, in <module>
    print(M[0].index(max(M[0])))
AttributeError: 'numpy.ndarray' object has no attribute 'index'

from pylab import *
from scipy import *
from scipy.io import read_array
import matplotlib.pyplot as plt
import sys
import string