Coding

Importing Python Libraries

On line 3 type import random and press enter.

Creating the while True loop

Type the following line of code under import random

while True:

Once you press enter your cursor will automatically indent. Start typing the rest of your code from here.

Creating the Rock Paper Scissor Variables

WHAT IS A VARIABLE

Think of a variable as a box that stores information that can be used throughout our program. We give variables a descriptive name so we and others can understand what is going on within our program.

To create the rock paper scissors variables type the following code:

    Paper = Image("99999:90009:90009:90009:99999")
    Rock = Image("00000:09990:09990:09990:0000")
    Scissors = Image("90099:09099:00900:09099:90099")

Your code will look like this:

# Imports go at the top
from microbit import *
import random
while True:
    Paper = Image("99999:90009:90009:90009:99999")
    Rock = Image("00000:09990:09990:09990:0000")
    Scissors = Image("90099:09099:00900:09099:90099")

Creating the on shake Action

To create the on shake action type the following code below the variables section.

    if accelerometer.was_gesture('shake'):
        choice = random.randint(0,2)

Your completed code so far will look like this:

# Imports go at the top
from microbit import *
import random

while True:
    Paper = Image("99999:90009:90009:90009:99999")
    Rock = Image("00000:09990:09990:09990:0000")
    Scissors = Image("90099:09099:00900:09099:90099")
    if accelerometer.was_gesture('shake'):
        choice = random.randint(0,2)

Creating the Choice = 0 Condition

Under the choice = random.randint(0,2) line we are going to create an if condition to determine what will happen if choice = 0.

Type the following code:

    if choice == 0:
        display.show(Paper)

This will display paper on the LED matrix if choice equals 0.

Completed code so far:

# Imports go at the top
from microbit import *
import random

while True:
    Paper = Image("99999:90009:90009:90009:99999")
    Rock = Image("00000:09990:09990:09990:0000")
    Scissors = Image("90099:09099:00900:09099:90099")
    if accelerometer.was_gesture('shake'):
        choice = random.randint(0,2)
        if choice == 0:
            display.show(Paper)

Creating the Choice = 1 Condition

Under the display.show(Paper) line we are going to create an elif condition to determine what will happen if choice = 1.

NOTE

Make sure you unindent your code so your cursor is back in line with the if condition.

Type the following code:

    elif choice == 1:
        display.show(Rock)

This will display rock on the LED matrix if choice equals 1.

Completed code so far:

# Imports go at the top
from microbit import *
import random

while True:
    Paper = Image("99999:90009:90009:90009:99999")
    Rock = Image("00000:09990:09990:09990:0000")
    Scissors = Image("90099:09099:00900:09099:90099")
    if accelerometer.was_gesture('shake'):
        choice = random.randint(0,2)
        if choice == 0:
            display.show(Paper)
        elif choice == 1:
            display.show(Rock)

Creating the Choice = 2 Condition

Under the display.show(Rock) line we are going to create an else condition to determine what will happen if choice = 2.

NOTE

Make sure you unindent your code so your cursor is back in line with the elif condition.

Type the following code:

    else:
        display.show(Scissors)

This will display scissors on the LED matrix if choice equals 1.

Completed Code

# Imports go at the top
from microbit import *
import random

while True:
    Paper = Image("99999:90009:90009:90009:99999")
    Rock = Image("00000:09990:09990:09990:0000")
    Scissors = Image("90099:09099:00900:09099:90099")
    if accelerometer.was_gesture('shake'):
        choice = random.randint(0,2)
        if choice == 0:
            display.show(Paper)
        elif choice == 1:
            display.show(Rock)
        else:
            display.show(Scissors)

Well done you have now completed the code for the rock, paper scissors game. Let's move on to learn how to download it to the micro:bit.