Python - Random Module
The random
module is a built-in module to generate the pseudo-random variables. It can be used perform some action randomly such as to get a random number, selecting a random elements from a list, shuffle elements randomly, etc.
Generate Random Floats
The random.random()
method returns a random float number between 0.0 to 1.0. The function doesn't need any arguments.
>>> import random
>>> random.random()
0.645173684807533
Generate Random Integers
The random.randint()
method returns a random integer between the specified integers.
>>> import random
>>> random.randint(1, 100)
95
>>> random.randint(1, 100)
49
Generate Random Numbers within Range
The random.randrange()
method returns a randomly selected element from the range created by the start, stop and step arguments.
The value of start is 0 by default. Similarly, the value of step is 1 by default.
>>> random.randrange(1, 10)
2
>>> random.randrange(1, 10, 2)
5
>>> random.randrange(0, 101, 10)
80
Select Random Elements
The random.choice()
method returns a randomly selected element from a non-empty sequence. An empty sequence as argument raises an IndexError.
>>> import random
>>> random.choice('computer')
't'
>>> random.choice([12,23,45,67,65,43])
45
>>> random.choice((12,23,45,67,65,43))
67
Shuffle Elements Randomly
The random.shuffle()
method randomly reorders the elements in a list.
>>> numbers=[12,23,45,67,65,43]
>>> random.shuffle(numbers)
>>> numbers
[23, 12, 43, 65, 67, 45]
>>> random.shuffle(numbers)
>>> numbers
[23, 43, 65, 45, 12, 67]
Learn more about the random module in Python docs.