compter les valeurs dans Numpy List Python
>>> import numpy
>>> y = np.array([1, 2, 2, 2, 2, 0, 2, 3, 3, 3, 2, 2])
>>> numpy.count_nonzero(y == 1)
1
>>> numpy.count_nonzero(y == 2)
7
>>> numpy.count_nonzero(y == 3)
3
Homeless Herring