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Y8 Python
Python
On the road to code!
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Slide 1:
Diapositive
Computing
Lower Secondary (Key Stage 3)
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Python
On the road to code!
Slide 1 - Diapositive
What is Python?
Slide 2 - Carte mentale
Python
High level programming language
Allows you to create your own programs
Text based
Slide 3 - Diapositive
Recall
Try these old recall questions on things you should know about programming
Slide 4 - Diapositive
Code that runs one line after another is known as coding in...
A
Sequence
B
Selection
C
Iteration
D
Recursion
Slide 5 - Quiz
Code that repeats/loops is known as coding in...
A
Sequence
B
Selection
C
Iteration
D
Recursion
Slide 6 - Quiz
Code that only runs when a condition is met is known as coding in...
A
Sequence
B
Selection
C
Iteration
D
Recursion
Slide 7 - Quiz
An example of a loop in python would be:
A
print("this")
B
while x > 0 :
C
if x == 0 :
D
name = input("-->")
Slide 8 - Quiz
A value that is used by the program and can change is known as a...
A
constant
B
procedure
C
function
D
variable
Slide 9 - Quiz
Refresh
Time to refresh those skills
Slide 10 - Diapositive
outputs
Used to output messages to the screen
In Python we use
print
print
(
"hello world"
)
Slide 11 - Diapositive
create.withcode.uk
Slide 12 - Lien
Variables
An area in memory used to store a value the program will use.
The value is likely to change
Here are some examples in Python
name =
"Dave"
- Text
health =
100
- Integer
discount =
False
- Boolean (True/False)
Slide 13 - Diapositive
Inputs
We often use variables to store inputs from the user
In Python we use
input
input
(
"Question the user will see as a prompt"
)
So to store a name we would use:
name =
input
(
"What is your name ? --> "
)
Slide 14 - Diapositive
Checkpoint
Label the correct parts of this code (drag them)
filmpref = input("What kind of films do you like? ")
Variable
This is aplaceholder for a value that will change in the program
function
This is a calling a pre-made function from the python library
All functions are followed by brackets ()
Sometimes information is written between these brackets
This is called a "parameter"
Parameter
This is a text prompt which is the parameter of the input function.
It will pop up on screen before taking an input from the user
Slide 15 - Diapositive
create.withcode.uk
Slide 16 - Lien
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")
Slide 17 - Question de remorquage
IF/ELIF/ELSE
When we need to make a decision in a program we use a selection statement .
In Python we use
if elif
and
else
Let's look at some coded examples...
Slide 18 - Diapositive
create.withcode.uk
Slide 19 - Lien
Now Try Yourself
Slide 20 - Diapositive
create.withcode.uk
Slide 21 - Lien
In python you must write IF, ELIF and ELSE in capital letters
A
TRUE
B
FALSE
Slide 22 - Quiz
After every if, elif and else statement you put ...
A
;
B
}
C
:
D
#
Slide 23 - Quiz
An elif part of the code will only run if the if part was not met
A
True
B
False
Slide 24 - Quiz
an if statement must always have an else component
A
True
B
False
Slide 25 - Quiz
which of the following if statements would cause an error
A
if name != "Fred":
B
if password == guess:
C
if name = "Bobby":
D
if age >= 18 :
Slide 26 - Quiz
While Loops
Sometimes you need the computer to repeat steps until a certain condition has been met
In Python we use
while
and
for
Let's look at some coded examples of a while loop...
Slide 27 - Diapositive
create.withcode.uk
Slide 28 - Lien
Your Turn
Making a quiz question program
Slide 29 - Diapositive
create.withcode.uk
Slide 30 - Lien
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