## Setting Up a Boa Favorites Project We'll be starting with a Boa favorites project. First, we'll create a new folder using the terminal: ```bash mkdir boa-favorites-cu ``` Next, we will use the `cd` command to navigate to the folder: ```bash cd boa-favorites-cu ``` We'll create a new Python project using the `uv` command: ```bash uv init ``` We can see a new folder has been created with the following files: - `README.md` - `pyproject.toml` - `hello.py` - `.python-version` - `.gitignore` We'll then open our folder in VS Code using the following terminal command: ```bash code boa-favorites-cu ``` Next, we'll create a new `favorites.vy` file by right-clicking on the folder and selecting "New File." After creating it, we'll paste the following code: ```python # I'm a comment! # pragma version ^0.4.1 # @license MIT struct Person: favorite_number: uint256 name: String[100] my_favorite_number: uint256 # Static Array/List list_of_numbers: public(uint256[5]) list_of_people: public(Person[5]) list_of_people_index: uint256 name_to_favorite_number: HashMap(String[100], uint256) @deploy def __init__(self): self.my_favorite_number = 7 @external def store(favorite_number: uint256): self.my_favorite_number = favorite_number @external @view def retrieve() -> uint256: return self.my_favorite_number @external def add_person(name: String[100], favorite_number: uint256): new_person: Person = Person(favorite_number = favorite_number, name = name) self.list_of_people[self.list_of_people_index] = new_person self.list_of_numbers[self.list_of_people_index] = favorite_number self.list_of_people_index += 1 self.name_to_favorite_number[name] = favorite_number ``` Finally, we can compile our contract using the following command: ```bash Vyper favorites.vy ```