Nested IF

301.9 Selection

Selection — Note 3 of 4

IF statements inside IF statements.

What you need to know

A nested if is an if statement inside another if statement. Use this when a second decision depends on the first. Indentation shows which if each else belongs to.

What to know

An if inside an if is 'nested'
The inner if only runs if the outer if is True
Indentation shows the nesting level
Don't nest too deeply — consider elif instead

Code examples

Nested IF

python

has_ticket = True
age = 14

if has_ticket:
    if age >= 18:
        print("Adult entry")
    else:
        print("Child entry")
else:
    print("Buy a ticket first")

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Specification notes for programming are in Paper 2.

Nested IF

301.9 Selection

Practise exam questions

Selection — Note 3 of 4

IF statements inside IF statements.

What you need to know

A nested if is an if statement inside another if statement. Use this when a second decision depends on the first. Indentation shows which if each else belongs to.

What to know

An if inside an if is 'nested'
The inner if only runs if the outer if is True
Indentation shows the nesting level
Don't nest too deeply — consider elif instead

Code examples

Nested IF

python

has_ticket = True
age = 14

if has_ticket:
    if age >= 18:
        print("Adult entry")
    else:
        print("Child entry")
else:
    print("Buy a ticket first")

← Previous noteELIF chains301.9 Selection Next note →Match Case301.9 Selection

Back to Selection

Specification notes for programming are in Paper 2.