[Python] Why is Python not evaluating this Boolean condition? [duplicate]

If I run this example code:

age = int(input("Enter age:\n"))

if age < 100:
birthday = bool(int(input("Is it your birthday? (Enter 1 or 0):\n")))

if age == 5 or (age == 3 and birthday):
print("Yes")
else:
print("No")


and I enter 150 for age, it outputs "No".

This means that if age == 5 or (age == 3 and birthday): is not being evaluated, since it would return an error if it were, because birthday exists only if age is under 100. Why is this?

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