Random Number Generation

What is random number generation?

Random number generation is a programming concept that involves a computer generating a random number to be used within a program to add an element of unpredictability
Examples of where this concept could be used include:
- Simulating the roll of a dice
- Selecting a random question (from a numbered list)
- National lottery
- Cryptography

Concept OCR exam reference Python

Random numbers

number = random(1,10)

number = random(-1.0,10.0)

import random

number = random.randint(1,10)

number = random.randint(-1.0,10.0)

Examples in Python

Random code

import random # importing random module

user = input("Enter a username: ") # asking user to enter a username
pw = input("Enter a password: ") # aksing user to enter a password

if user == "admin" and pw == "1234": # checking if the user and password are correct
code = random.randint(1000,9999) # generating a random 4 digit code
print("Your code is", code) # printing the code

National lottery

import random # importing random module

num1 = random.randint(1,59) # generating a random number between 1 and 59
num2 = random.randint(1,59)
num3 = random.randint(1,59)
num4 = random.randint(1,59)
num5 = random.randint(1,59)
num6 = random.randint(1,59)

print("Your lucky dip numbers are: ", num1, num2, num3, num4, num5, num6) # printing the numbers

Random Number Generation (OCR GCSE Computer Science)

Revision Note