numpy mean

1>>> a = np.array([[1, 2], [3, 4]])
2>>> np.mean(a)
32.5
4>>> np.mean(a, axis=0)
5array([2., 3.])
6>>> np.mean(a, axis=1)
7array([1.5, 3.5])
8

1>> import numpy as np 
2>> a=[1,2,3,4,5]
3>> np.mean(a)
43.0

1>>> import numpy
2>>> numbers = [3, 2, 8, 7]
3>>> mean = numpy.mean(numbers)
4>>> mean
55.0

1import numpy as np 
2a = np.arange(6).reshape(3,2) 
3average = np.average(a)

1# define ndarray a
2a = np.array([[1, 2], [3, 4]])
3# get the mean 
4np.mean(a, axis=None)