Cookie Jar

Cookie Jar

This Python program is an implementation to CS50’s Introduction to Programming with Python Week 8 - Cookie Jar Problem Set. The Cookie Jar program, implemented in jar.py, simulates a cookie jar with the following methods:

• __init__(self, capacity=12): Initializes a cookie jar with the specified capacity. Raises a ValueError if the capacity is not a non-negative integer.
• __str__(self): Returns a string representation of the cookie jar using 🍪 characters to indicate the number of cookies in the jar.
• deposit(self, n): Adds n cookies to the jar. Raises a ValueError if the deposit would exceed the jar's capacity.
• withdraw(self, n): Removes n cookies from the jar. Raises a ValueError if there aren't enough cookies in the jar.
• capacity(self): Returns the jar's capacity.
• size(self): Returns the number of cookies currently in the jar.

How to Use the Program

1. Open your terminal.

2. Navigate to the directory where you have saved the jar.py file.

   cd path/to/your/directory

3. Run the program using the python command:

   python jar.py

4. The program will interactively prompt you to test various functionalities of the cookie jar.

Class Explanation

The Jar class effectively simulates the behavior of a cookie jar. Here's how it works:

1. The __init__ method initializes the cookie jar with a specified capacity.
2. The __str__ method returns a string representation of the cookie jar using 🍪 characters.
3. The deposit method adds cookies to the jar, adjusting the size attribute accordingly.
4. The withdraw method removes cookies from the jar, updating the size attribute.
5. The capacity property returns the capacity of the cookie jar.
6. The size property returns the number of cookies currently in the jar.

How to Test

1. Open your terminal.

2. Navigate to the directory where you have saved the test_jar.py file.

   cd path/to/your/directory

3. Run the tests using the pytest command:

   pytest test_jar.py

4. The tests will run, and you will see the results indicating whether the program passes each test case.

Additional Notes

• The program uses a class structure to create a virtual cookie jar with various functionalities.
• The tests provided in the test_jar.py file ensure that the program behaves as expected.
• The class methods and properties are designed to handle various scenarios, including invalid inputs and exceeding the jar's capacity.
• Remember to thoroughly test the program and ensure it meets all requirements.