Python Random – random() Function
Last Updated :
26 Apr, 2023
There are certain situations that involve games or simulations which work on a non-deterministic approach. In these types of situations, random numbers are extensively used in the following applications:
- Creating pseudo-random numbers on Lottery scratch cards
- reCAPTCHA on login forms uses a random number generator to define different numbers and images
- Picking a number, flipping a coin, and throwing of a dice related games required random numbers
- Shuffling deck of playing cards
In Python, random numbers are not generated implicitly; therefore, it provides a random module in order to generate random numbers explicitly. A random module in Python is used to create random numbers. To generate a random number, we need to import a random module in our program using the command:
import random
Python Random random() Method
The random.random() function generates random floating numbers in the range of 0.1, and 1.0. It takes no parameters and returns values uniformly distributed between 0 and 1. There are various functions associated with the random module are:
- Python random()
- Python randrange()
- Python randint()
- Python seed()
- Python choice(), and many more. We are only demonstrating the use of the random() function in this article.
Python Random random() Syntax
Syntax : random.random()
Parameters : This method does not accept any parameter.
Returns : This method returns a random floating number between 0 and 1.
Python random.random() Method Example
Random in Python generate different number every time you run this program.
Python3
from random import random
print(random())
|
Output:
0.41941790721207284
Another way to write the same code.
Python3
import random
print(random.random())
|
Output:
0.059970593824388185
Create a List of Random Numbers
The random() method in Python from the random module generates a float number between 0 and 1. Here, we are using Python Loop and append random numbers in the Python list.
Python3
from random import random
lst = []
for i in range(10):
lst.append(random())
print(lst)
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Output:
[0.12144204979175777, 0.27614050014306335, 0.8217122381411321, 0.34259785168486445, 0.6119383347065234, 0.8527573184278889, 0.9741465121560601, 0.21663626227016142, 0.9381166706029976, 0.2785298315133211]
Python Random seed() Method
This function generates a random number based on the seed value. It is used to initialize the base value of the pseudorandom number generator. If the seed value is 10, it will always generate 0.5714025946899135 as the first random number.
Python3
import random
random.seed(10)
print(random.random())
random.seed(10)
print(random.random())
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Output:
0.5714025946899135
0.5714025946899135
