📜  创建具有随机值的 Numpy 数组 | Python

📅  最后修改于: 2022-05-13 01:55:09.985000             🧑  作者: Mango

创建具有随机值的 Numpy 数组 | Python

在本文中,我们将学习如何在给定数组的形状和类型的情况下创建一个填充随机值的 Numpy 数组。

我们可以使用 Numpy.empty() 方法来完成这项任务。该方法采用三个参数,如下所述 -

-> shape : Number of rows
-> order : C_contiguous or F_contiguous
-> dtype : [optional, float(by Default)] Data type of returned array. 

示例 #1:

# Python Program to create numpy array 
# filled with random values
import numpy as geek 
    
b = geek.empty(2, dtype = int) 
print("Matrix b : \n", b) 
    
a = geek.empty([2, 2], dtype = int) 
print("\nMatrix a : \n", a) 

输出:

Matrix b : 
 [140489599921032        21301024]

Matrix a : 
 [[140489599921048        18650592]
 [       10738656 140489568798064]]

示例 #2:

# Python Program to create numpy array 
# filled with random values
import numpy as geek 
  
# Python Program to create numpy array 
# filled with random values
import numpy as geek 
  
c = geek.empty([3, 3]) 
print("\nMatrix c : \n", c)
  
d = geek.empty([5, 3], dtype = int) 
print("\nMatrix d : \n", d)
   

输出:

Matrix c : 
 [[  1.37596097e-316   5.39314154e-317   5.39307830e-317]
 [  5.39345774e-317   5.39345774e-317   6.93325440e-310]
 [  5.39481741e-317   6.93325440e-310   8.69555537e-322]]

Matrix d : 
 [[140330665569272        23735792               0]
 [       10739936 140330589556496               0]
 [              0               0        10739904]
 [140330587337872               0        10915968]
 [              0        10739904               0]]