Python Nested If

Nested If Statements

print("Above ten,")

print("and also above 20!")
else:
print("but not above 20.")
In this example, the inner if statement only runs if the outer condition (

x > 10

How Nested If Works

Each level of nesting creates a deeper level of decision - making. The code evaluates from the outermost condition inward.

Example

Checking multiple conditions with nesting:

age = 25 has_license = True if age >= 18:
if has_license:

print("You can drive")
else:
print("You need a license")
else:
print("You are too young to drive")

Multiple Levels of Nesting

Example

Three levels of nesting:

score = 85 attendance = 90 submitted = True if score >= 60:
if attendance >= 80:
if submitted:

print("Pass with good standing")
else:
print("Pass but missing assignment")
else:
print("Pass but low attendance")
else:
print("Fail")

Nested If vs Logical Operators

Example

This nested if:

temperature = 25 is_sunny = True if temperature > 20:
if is_sunny:

print("Perfect beach weather!")

Example

Could also be written with and

temperature = 25 is_sunny = True if temperature > 20 and is_sunny:

print("Perfect beach weather!")

More Examples

Example

Login validation with nested checks:

is_active = True if username:
if password:
if is_active:

print("Login successful")
else:
print("Account is not active")
else:
print("Password required")
else:
print("Username required")

Example

Grade calculation with nested logic:

score = 92 extra_credit = 5 if score >= 90:
if extra_credit > 0:

print("A+ grade")
else:
print("A grade")
elif score >= 80:
print("B grade")
else:
print("C grade or below")