Purpose/Objectives: Teach student how to implement randomness into their code to make their code simulate real life situations.

In this lesson students will learn:

  • How to import random to python
  • How to use random with a list or number range
  • How to code randomness in everyday scenarios

ADD YOUR ADDITIONAL NOTES HERE:

  • Lists make it so every number has an equal chance of being picked if chosen at random.
  • Some topics that use luck are rolling dice, cryptography, etc.

What are Random Values?

Random Values are a number generated using a large set of numbers and a mathematical algorithm which gives equal probability to all number occuring

Each Result from randomization is equally likely to occur Using random number generation in a program means each execution may produce a different result

What are Examples of Random outputs in the world? Add a few you can think of.

  • Ex: Marbles
  • Cryptography
  • Dice
  • Statistics
  • The Lottery

Why do we need Random Values for code?

We need random values for code because when we want to run things like simulations, we need to be able to simulate the randomness of the real world. Furthurmore, it's good for testing and debugging code.

Random values can be used in coding: 

import random
random_number = random.randint(1,100)
print(random_number)

92

import random

def randomlist():
    list = ["apple", "banana", "cherry", "blueberry"]
    element = random.choice(list)
    print(element)
randomlist()

blueberry

Real Life Examples: Dice Roll

import random
for i in range(3):
    roll = random.randint(1,6)
    print("Roll " + str(i + 1) + ":" + str(roll))

Roll 1:6
Roll 2:4
Roll 3:4

Challenge #1

Write a function that will a simulate a coinflip and print the output

from random import randint as r

def coinflip():
    roll = r(1,2)
    if roll == 1:
        return "heads"
    else:
        return "tails"
print(coinflip())

heads

EXTRA: Create a function that will randomly select 5 playing Cards and check if the 5 cards are a Royal Flush

Homework

Given a random decimal number convert it into binary as Extra convert it to hexidecimal as well.

import random as r 

x = r.randint(0, 255)

def decToBin(N):
    return bin(N)

def decToHex(N):
    i = 0
    hexDec = []
    while N!=0:
        rm = N % 16
        if rm<10:
            rm = rm+48
        else:
            rm = rm+55
        hexDec.insert(i, chr(rm))
        i = i+1
        N = int(N / 16)
    print("\nEquivalent Hexadecimal Value = ", end="")
    i = i-1
    while i>=0:
        print(end=hexDec[i])
        i = i-1

print("Original number: " + str(x))
print("\nBinary: " + str(decToBin(x)))
decToHex(x)

Original number: 165

Binary: 0b10100101

Equivalent Hexadecimal Value = A5