Comparisons & Boolean Logic — Lesson 4: Build: Entry Check

New skill: Combining comparisons and logical operators
Previously learned: Unit 03 — parameters and return values

Why this matters

An event app can decide whether a person qualifies based on a pass or an age threshold.

Study this example

def can_watch(age, has_ticket):
    return age >= 13 and has_ticket

The comparison age >= 13 returns a Boolean. and combines that with the second Boolean parameter.

Before moving on, trace each line of the example by hand. Predict the result before running it in the browser.

Check your understanding

Does the sample function allow a twelve-year-old with a ticket?

Common mistake

Be explicit about whether the rule requires both conditions or only one.

Practice: Build: Entry Check

Complete can_enter_event(has_pass, age) so entry is allowed (True) if the person has a pass or is at least 18 years old. Otherwise return False.

Example 1 — Input

can_enter_event(True, 12)

Output

True

Example 2 — Input

can_enter_event(False, 18)

Output

True

Example 3 — Input

can_enter_event(False, 17)

Output

False

Example 4 — Input

can_enter_event(False, 35)

Output

True

Starter file: main.py

Use Run to experiment and Check to compare against published examples. A passing public example does not automatically establish mastery.

Hint 1 — Identify the key concept

Identify the two ways a person can qualify.

Hint 2 — Find an approach

Age must be compared to 18, including 18 itself.

Hint 3 — Check your answer

Join the two qualification conditions using `or`.

Reflection

Write a short explanation of why your code works. What input or change would make it behave differently?