Python lesson 2

• Computing
• Lower Secondary (Key Stage 3)

Python programming 

Lesson 2

What are the errors in this program?
Extension: What will the outcome of this program be when fixed?

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KEY OBJECTIVE

Conquer: To understand the need for variables and inputs. 

Aspire: Create your own variables. 

Previously you have:

Written a program in a sequence

Used the print statement

Used a subroutine

Checked for errors in your code

Fixed common errors in your code

PRIMM

All new programmers use the PRIMM method to learn and create new code. There are 5 key stages. 

1. Predict
2. Run
3. Investigate
4. Modify
5. Make

Task 1 - PREDICT

What do you think this code will do?

What will this code do?

Make your prediction

Lets check your prediction 

Run the code

Click the green play button

Run the following code:

What has changed about this code?

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INVESTIGATE and MODIFY

• Make the program call the other two functions
• Change the name in the printing2 procedure to your name

• (Harder) Add more text after the greeting in printing3 so it will print the following --> "Hello Sally , nice to meet you"
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Variables

We use variables to save information inside our programs.

This information could be your name, score, health and more.

Creating variables

To create a variable we need to give it a name

We then store the information we want inside with the = Sign

Create 5 variables

To store

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Your name

Favorite food 

Dream holiday destination

Age

Favorite Film

Predict:


What will the outcome of this code be?

1. Hello world will appear
2. "Hello world" will appear
3. Nothing
4. An error will occur

Predict:

What will the outcome of this code be?

1. Error on line 4
2. Error on line 7
3. Hello there
4. Nothing

What is the process of fixing errors in your program?

1. Error checking
2. Debugging
3. Syntax errors
4. Python

What is the name of the format we have to write in python

1. Grammar
2. Debugging
3. Syntax
4. Functions

What keyword do we use to create a function?

1. def
2. Define
3. def()
4. Define function.

Inputs

Sometimes we want the user to be able to enter their own information to store

We make the variable in the same way, but this time we add the word input to allow the user to respond

Lesson task

Create 4 variables with inputs that asks the following questions

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What is your full name?

What was your favorite thing about the holidays? 

What are you looking forward to for your options?

What can you improve on from last year? 

CORRECT

CAUSE AN ERROR

print = ("Hello")

Print("Yes!")

print("this one)

name = imput("what is your name")

name = input("what is your name")

print("this text")

fav colour = "Green"

age = 10

print("Hello", name)

print("Bye",name")

Which of these variable names would be most suitable to hold data on a person's surname in Python?

1. lastName
2. firstName
3. surname
4. Age

Mastery typing task

To become efficient programmers we must get better and faster at typing

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