Shopping Cart Exercise

Welcome to the Shopping Cart exercise! In this exercise, you will be working with a basic shopping cart implementation in Python. The ShoppingCart class allows you to add items, remove items, calculate statistics, and perform various operations on a shopping cart.

Instructions

Your task is to complete the following steps:

1. Fork this repository to your GitHub account.
2. Clone the forked repository to your local machine.
3. Open the shopping_cart.py file and implement the missing functionalities marked with # TODO comments.
4. Write test cases in the test_shopping_cart.py file to ensure the correctness of the implemented functionalities.
5. Run the test cases using python test_shopping_cart.py and make sure all tests pass.
6. Make any necessary modifications and improvements to the code.
7. Commit and push your changes to your GitHub repository.
8. Submit a pull request to the original repository to share your solution.

Files

The repository contains the following files:

• shopping_cart.py: The main Python file that contains the incomplete ShoppingCart class. You need to complete the missing functionalities.
• test_shopping_cart.py: The unit tests for the ShoppingCart class. You should write additional test cases to cover all scenarios.
• README.md: This file, providing instructions and information about the exercise.

Requirements

To complete this exercise, you need to have the following:

• Python (version 3.6 or above) installed on your machine.
• A text editor or an integrated development environment (IDE) to write and modify Python code.
• Basic knowledge of Python and object-oriented programming concepts.
• Familiarity with writing and running test cases using the unittest framework.

Guidelines

• Read the code comments in the shopping_cart.py file to understand the required functionalities.
• Follow the test-driven development (TDD) approach by writing test cases first and then implementing the required functionalities.
• Write clear and concise code with proper variable names and comments to enhance code readability.
• Feel free to add any additional features or improvements to the shopping cart implementation.
• If you face any issues or have any questions, don't hesitate to ask for help.

Resources

• Python unittest documentation: https://docs.python.org/3/library/unittest.html
• Git and GitHub documentation: https://docs.github.com/en

Good luck with the exercise! Happy coding!