Exercise 7-5 Solution Python Crash Course Chapter 7 : User Input And While Loops

 

📘 Python Crash Course – Chapter 7: User Input And while loops – Exercise 7-5 Solution

Welcome to another solution from Python Crash Course by Eric Matthes.

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📝 Exercise 7-5

Task:
A movie theater charges different ticket prices depending on a person’s age . If a person is under the age of 3, the ticket is free; if they are between 3 and 12, the ticket is $10; and if they are over age 12, the ticket is $15 . Write a loop in which you ask users their age, and then tell them the cost of their movie ticket

✅ Solution Code:

while True:
    age = int(input("Enter your age: "))
    if age < 3:
        print("Your ticket is free!")
    elif 3 <= age <= 12:
        print("Your ticket is $10.")
    elif age > 12:
        print("Your ticket is $15.")
    else:
        print("Invalid age entered.")

🧠 Code Explanation:

1. Start an infinite loop:

   The while True statement creates an infinite loop that will continue running until explicitly stopped (e.g., by breaking the loop).

2. Prompt for age:

   The user is asked to enter their age. The input is converted to an integer using the int() function and stored in the variable age.

3. Check ticket pricing conditions:

   The program uses an if-elif-else chain to determine the ticket price based on the user's age:

   • if age < 3: If the age is less than 3, the ticket is free.
   • elif 3 <= age <= 12: If the age is between 3 and 12 (inclusive), the ticket costs $10.
   • elif age > 12: If the age is greater than 12, the ticket costs $15.
   • else: If the input does not match any of the above conditions, an error message is displayed indicating an invalid age.

🔍 Output:

Enter your age: 5
Your ticket is $10.
Enter your age: 1  
Your ticket is free!
Enter your age: 25  
Your ticket is $15.
Enter your age: 100
Your ticket is $15.
Enter your age: 50 
Your ticket is $15.

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📚 Related Exercises from Chapter 7:

• ➤ Exercise 7-1 | Rental Car
• ➤ Exercise 7-2 | Restaurant Seating
• ➤ Exercise 7-3 | Multiples of Ten
• ➤ Exercise 7-4 | Pizza Toppings
• ➤ Exercise 7-5 | Movie Tickets
• ➤ Exercise 7-6 | Three Exits
• ➤ Exercise 7-7 | Infinity
• ➤ Exercise 7-8 | Deli
• ➤ Exercise 7-9 | No Pastrami
• ➤ Exercise 7-10 | Dream Vacation

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