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Python Random Module

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Python Random module

The Python random module functions depend on a pseudo-random number generator function random(), which generates the float number between 0.0 and 1.0.

There are different types of functions used in a random module which is given below:

random.random()

This function generates a random float number between 0.0 and 1.0.

random.randint()

This function returns a random integer between the specified integers.

random.choice()

This function returns a randomly selected element from a non-empty sequence.

Example

# importing "random"  module.
import random
# We are using the choice() function to generate a random number from
# the given list of numbers.
print ("The random number from list is : ",end="")
print (random.choice([50, 41, 84, 40, 31]))

Output:

The random number from list is : 84

random.shuffle()

This function randomly reorders the elements in the list.

random.randrange(beg,end,step)

This function is used to generate a number within the range specified in its argument. It accepts three arguments, beginning number, last number, and step, which is used to skip a number in the range. Consider the following example.

# We are using randrange() function to generate in range from 100
# to 500. The last parameter 10 is step size to skip
# ten numbers when selecting.
import random
print ("A random number from range is : ",end="")
print (random.randrange(100, 500, 10))

Output:

A random number from range is : 290

random.seed()

This function is used to apply on the particular random number with the seed argument. It returns the mapper value. Consider the following example.

# importing "random" module.
import random
# using random() to generate a random number
# between 0 and 1
print("The random number between 0 and 1 is : ", end="")
print(random.random())

# using seed() to seed a random number
random.seed(4)

Output:

The random number between 0 and 1 is : 0.4405576668981033
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