3_2_9 Random number generation in a programming language

To generate numbers randomly in Python we need to import the library function known as random.

import random

We can then use this function to randomise.

Examples of this could be:

Random Choice

import random

myArray = ["ONE","TWO","THREE"]

print (random.choice(myArray))

This just picks a random item from an array.

Random Integer

import random

print (random.randint(1,20))

This will pick a random integer between 1 and 20.

Random Integer from a Range

import random

print (random.randrange(1,20))

This will pick a random integer between 1 and 20 but will not include the number 20.

Shuffle

To use shuffle you also need to import shuffle from random.

import random

from random import shuffle

myArray = ["HELLO","GOODBYE","NICE","HOW ARE YOU"]

shuffle(myArray)

print(myArray)

Password Generator Machine

Create an app that creates a random password when a user first creates an account. The random password should:

• Include letters and numbers
• The password should be generated at random
• The password should be displayed to the user

Extending the Program - Extra Mile Task

The user should have the option to:

• Create a new random password if they aren't happy with it
• Create a list of 3 passwords for the user to choose from - the selected password should then be displayed to the user

1. Download and print the test paper here: https://drive.google.com/open?id=0B5fLtQ0Xgr2PT1dRV1doQmlOX1k
2. Try the mock test yourself.
3. Use the 3.2.9 Walking Talking Mock below to guide you through answering the questions.