Python lesson 3

• Computing
• Lower Secondary (Key Stage 3)

Python programming 

Lesson 3

Add a question for the user asking them how their day is. Allow for 2 response options.
Extention: Add optional responses with different spelling/caps

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KEY OBJECTIVE

Conquer: To understand the need for conditional statements

Aspire: Create your own conditional statements. 

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

Added inputs to allow the user to respond/

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

Adding conditions

We have been taking inputs, storing variables and outputting results to the screen

Now we need to add some conditions.

What will happen in this program if I enter "sunny" and then "raining"?

10 is more than 5

Statement is true

Output 10+5 = 15

Lets check your prediction 

Run the code

Click the green play button

INVESTIGATE and MODIFY

• Add another question
• Ask the user how they are feeling
• If the user enters happy give a positive message.
• If they enter unhappy give a hopeful message. 

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Conditional statements

If statements allow the program to give different responses to user inputs. 

Operators 

1. == (Equal to)
2. != (Not equal to)
3. > (Greater than)
4. < (Less than)
5. >= (Greater than or equal)
   
6. < (Less than or equal)

Creating a calculator 

Sorting inputs

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

Which code below will call a function?

1. def menu()
2. Hello world
3. menu()
4. score = 0

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.

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")

Mastery typing task

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

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