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numpy.random.rand() in Python

  • Last Updated : 28 Mar, 2022

The numpy.random.rand() function creates an array of specified shape and fills it with random values. Syntax : 

numpy.random.rand(d0, d1, ..., dn)

Parameters : 

d0, d1, ..., dn : [int, optional]Dimension of the returned array we require, 
     If no argument is given a single Python float is returned.

Return : 

Array of defined shape, filled with random values.

Code 1 : Randomly constructing 1D array 

Python




# Python Program illustrating
# numpy.random.rand() method
  
import numpy as geek
  
# 1D Array
array = geek.random.rand(5)
print("1D Array filled with random values : \n", array);

Output : 

1D Array filled with random values : 
 [ 0.84503968  0.61570994  0.7619945   0.34994803  0.40113761]

Code 2 : Randomly constructing 2D array 

Python




# Python Program illustrating
# numpy.random.rand() method
  
import numpy as geek
  
# 2D Array  
array = geek.random.rand(3, 4)
print("\n\n2D Array filled with random values : \n", array);

Output : 

2D Array filled with random values : 
 [[ 0.94739375  0.5557614   0.69812121  0.86902435]
 [ 0.94758176  0.22254413  0.21605843  0.44673235]
 [ 0.61683839  0.40570269  0.34369248  0.46799524]]

Code 3 : Randomly constructing 3D array 

Python




# Python Program illustrating
# numpy.random.rand() method
  
import numpy as geek
  
# 3D Array    
array = geek.random.rand(2, 2 ,2)
print("\n\n3D Array filled with random values : \n", array);

Output : 

3D Array filled with random values : 
 [[[ 0.97942627  0.01068711]
  [ 0.35749073  0.22484643]]

 [[ 0.99733022  0.8029555 ]
  [ 0.44111692  0.90537128]]]

References : https://docs.scipy.org/doc/numpy-dev/reference/generated/numpy.random.rand.html#numpy.random.rand 

Note : These codes won’t run on online IDE’s. So please, run them on your systems to explore the working. 

This article is contributed by Mohit Gupta_OMG 😀. If you like GeeksforGeeks and would like to contribute, you can also write an article using write.geeksforgeeks.org or mail your article to review-team@geeksforgeeks.org. See your article appearing on the GeeksforGeeks main page and help other Geeks. Please write comments if you find anything incorrect, or you want to share more information about the topic discussed above.


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