Python introduction

1. Created by Mr Suffar
Monday, August 28, 2023
Lesson objectives…
Understand how to setup Python IDLE.
Use the print and input functions successfully.
Explain the purpose of variables & constants.
Python Introduction
Lesson 1

2. Created by Mr Suffar
Video
https://youtu.be/KLcPJQPwTjU
You can either use Python IDLE or web browser based
python (repl it) on: https://repl.it/languages/python3
Setting up your IDE

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Starter activity
• Create a folder in your area
named: Python.
• Create another folder inside the
Python folder and name it:
Lesson 1.
• Open IDLE Python. Click on FILE
 New FILE.
Python Shell
Editor
Window
Python Introduction

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• Click on options > Configure
IDLE
• Change the font size to 25 and
tick BOLD then click APPLY
then click on OK
Python Introduction

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• Click on options > Configure
IDLE
• Click on GENERAL then click
on Open Edit Window then
click on APPLY and press OK.
Python Introduction

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Video
https://www.youtube.com/watch?v=HY7roHmN8vo
Lesson 1 - Theory

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Print function
Whenever you want to display something on the screen,
you must use the print command. You must ALWAYS
open and close the PARANTHESIS.

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Syntax error
Syntax: The order of instructions or commands.
Syntax Error: When you break the rules of the
programming language.
Examples:
• Print(“Welcome Tom”)
• print(“Football”
• print(Dancing)

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Complete task 1. Use the hint to help you.

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Print function
1- Type the following in python:
2- Press F5 to run the program.
3- Create a program that displays your name, your
country and date of birth on the screen on separate
lines. Hint: Use 3 print commands.

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Variables & Constants
Variable: A location in a
memory where data is
stored. It can be changed
while the program is
running.
Constant: A location in a
memory where data is
stored. It cannot be
changed while the program
is running.

12. Created by Mr Suffar
film = “Frozen”
print (film)
Assign film as
a variable
which stores
a value.
Displays the
value of the
variable.
Value
Variables & Constants

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• Hint: You DO NOT need Quotation mark when
storing numbers in a variable.
Assign film as
a variable
which stores
the value.
Displays the
value of the
variable.
Value
Variables & Constants

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film = “Lion King”
print (“My favourite film is” , film)
Concatenation: Joining things together.
In python, we can use the comma “,” to concatenate.
Variables & Constants
What will the above program display?
My Favourite film is Lion King.

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film = “Lion King”
print (“My favourite film is” , “film”)
What will this program display?
Variables & Constants
My favourite film is film
You must NOT put quotation marks around
variables.

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• The above code will ask the user to enter
their name. Then it will wait until the user
enters their name.
Variable called
“name”
Displays the
user’s answer
The
question
Input function
Displays the
user’s answer

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• This is what the program will display if you
enter Martin.
Variable called
“name”
Displays the
user’s answer
The
question
Input function
Displays the
user’s answer

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• What will the program display if you enter Martin.
• Your name is Martin
Variable called
“name”
The
question
Input function
Displays the
user’s answer

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Python Introduction
hobby = imput(“Enter a hobby”)
print (hobby)
Syntax errors occurs when you break the
rules of the programming language.
Identify the syntax error in the code above:
• imput should be changed to input.

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Complete task 1-7. Use the hint to help
you.
Then complete the extension task.
Tasks

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1. Display the following on 4 separate lines:
• I like Snapchat
• I like Instagram
• I like Twitter
• I love Facebook
Extension:
Display your name, your age and your gender on 3 separate lines.
Hint:
https://youtu.be/3G9LW5CGa7Y

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2. Create a variable called food and store your favourite food
inside the variable. Print out the value of the variable onto the
screen. YOU DO NOT NEED AN INPUT COMMAND.
Hint:
https://youtu.be/Kf5w5MhO_t8

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3) Ask the user for their favourite film. Display “I also like
watching”, film. Hint
https://youtu.be/V3GIhjCrnm0

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4. Create a program that ask the user for their hobby, surname, favourite colour
and favourite pet. Display the above on 4 separate lines. “Remember you can’t
have space in a variable name.
Hint:
https://youtu.be/Ru34WIgnZ08

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5. Create a program that ask the user for their name. Display the
name 1000 times. Use * to multiply.
Example:
Hint:
https://youtu.be/fZEUPpQ6gNQ

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6. Create a program that ask the user for their favourite food.
Display “I also like”, food. Food should be replaced with the user’s
answer. hint:
https://youtu.be/hpCJTgMdTb0

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7. Ask the user for their name and favourite hobby. Display “your
name is”, name, “and your favourite hobby is”, hobby. Example:
https://youtu.be/fr7nBwIEsOs

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Homework
Complete the extension tasks (task 8 and 9) if you’ve
finished the previous questions.
Extension

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8. Ask the user for a username. Then display “Welcome”, username.
https://youtu.be/PIdZZSV9jVU

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9. Ask the user to enter a random symbol such as #. Then display
that symbol 100 times.
https://youtu.be/UvsF0Nx5rYs

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Homework
Video of data types: https://youtu.be/ka3nBNi-j9M