chapter-8.4-random.md

Chapter 8.4. The random Module

Table Of Contents:

• Chapter 8.4. The random Module
  • Usage
    • Printing out a random number from a range 1 to 6
    • Printing out 10 random numbers from a range 1 to 6
    • Printing out a random character from a string
    • Printing out 5 random characters as a list from a string
    • Printing out a random password string with 8 characters

Reference: https://docs.python.org/3/library/random.html

• random module implements pseudo-random generators for various distributions.

Some of the functions are as follows:

• random.seed()

  It initializes the random number generator.

• random.randrange()

  It accepts 3 parameters start, stop, and step which is similar to range() function. It returns the random from the eligible numbers from the range function.

• random.randint()

  It is similar to randrange() method but the stop number is inclusive

• random.choice()

  It chooses a character from the string provided.

• random.choices()

  It chooses k number of characters as a list from the string provided.

Usage

Printing out a random number from a range 1 to 6

import random

print(random.randint(1,6))

Printing out 10 random numbers from a range 1 to 6

import random

for _ in range(10):
    print(random.randint(1,6))

Printing out a random character from a string

import random

options = "12345ABCDEabcde"
print(random.choice(options))

Printing out 5 random characters as a list from a string

import random

options = "12345ABCDEabcde"
print(random.choices(options, k=5))

Printing out a random password string with 8 characters

import random

options = "12345ABCDEabcde"
print(''.join(random.choices(options, k=8)))