Week 11

Build Your Own Commands

Your mission: Group useful commands, give them a name and use them again.

New coding words

function
define
call
parameter
reusable

What the coding words mean

function: A named group of instructions that performs a task.
define: To create a function and describe what it should do.
call: To run a function by writing its name with parentheses.
parameter: A variable that allows a function to receive information.
reusable: Able to be used again without rewriting all the commands.

Code along

Build a reusable cheer

Define a cheer function and call it using two different names.

Your Python code.py

Tab indents. Esc then Tab leaves the editor. Ctrl/⌘ + Enter runs your code.

Output (Shell)What your program does

Select Run my code to try this program.

Opening your coding space…Each activity has its own saved code.

Mini project

Turtle Shape Factory

Build a function that draws squares in different sizes and colours.

Your Python code.py

Tab indents. Esc then Tab leaves the editor. Ctrl/⌘ + Enter runs your code.

Output (Shell)What your program does

Select Run my code to try this program.

Turtle drawing

Run your code to draw here.

Opening your coding space…Each activity has its own saved code.

Your mini-project to-do list

0 of 4 completed

Complete these activities in the mini-project editor above. After each change, select Run my code to check your program’s output or drawing.

Level 1: Call draw_square() using a different size and colour.Level 2: Create a draw_triangle(size, colour) function.Level 3: Use a loop to call the square function several times.

Save your finished mini project

Select Download my work and save the file as week_11_turtle_shape_factory.py. The .py ending tells us that the file contains Python code. Keep this file as a copy of your finished program.

Debugging detective

In your mini-project code: Change one function call from draw_square to draw_squar. Read the NameError, then repair the spelling. Select Run my code after each change to check your program’s output or drawing.

Knowledge check

Question 1

Which Python word creates a function?

fordef

Question 2

Python codecheer(name)

What is the parameter?

Your answer

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How are you getting on so far?

My checklist

Finished Week 11?

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