random.setstate() in Python (original) (raw)

Last Updated : 17 May, 2020

**Random** module is used to generate random numbers in Python. Not actually random, rather this is used to generate pseudo-random numbers. That implies that these randomly generated numbers can be determined.

random.setstate()

The setstate() method of the random module is used in conjugation with the getstate() method. After using the getstate() method to capture the state of the random number generator, the setstate() method is used to restore the state of the random number generator back to the specified state. The setstate() method requires a state object as a parameter which can be obtained by invoking the getstate() method.Example 1:

Python3 1== `

import the random module

import random

capture the current state

using the getstate() method

state = random.getstate()

print a random number of the

captured state

num = random.random() print("A random number of the captured state: "+ str(num))

print another random number

num = random.random() print("Another random number: "+ str(num))

restore the captured state

using the setstate() method

pass the captured state as the parameter

random.setstate(state)

now printing the same random number

as in the captured state

num = random.random() print("The random number of the previously captured state: "+ str(num))

`

Output:

A random number of the captured state: 0.8059083574308233 Another random number: 0.46568313950438245 The random number of the previously captured state: 0.8059083574308233

Example 2:

Python3 `

import the random module

import random

list1 = [1, 2, 3, 4, 5]

capture the current state

using the getstate() method

state = random.getstate()

Prints list of random items of given length

print(random.sample(list1, 3))

restore the captured state

using the setstate() method

pass the captured state as the parameter

random.setstate(state)

now printing the same list of random

items

print(random.sample(list1, 3))

`

Output:

[5, 2, 4] [5, 2, 4]