numpy matrix code example
Example 1: numpy matrix
>>> np.array([[1, 2], [3, 4]])
array([[1, 2],
[3, 4]])
#np.matrix is no longer recommended!
Example 2: numpy matrix in python 3
np.matrix([[1, 2], [3, 4]])
# matrix([[1, 2],
# [3, 4]])
Example 3: numpy
>>> import numpy as np
>>> a = np.array([2,3,4])
>>> a
array([2, 3, 4])
>>> a.dtype
dtype('int64')
>>> b = np.array([1.2, 3.5, 5.1])
>>> b.dtype
dtype('float64')