class Bookstore:
    """
    A bookstore class to hold books' names, their authors, and costs.

    Attributes:
    -----------
    books : list
        A list containing the books in the bookstore. Each book is represented as a tuple containing
        its name, author, and cost.

    Methods:
    --------
    add_book(bookname: str, author: str, cost: float):
        Adds a new book to the bookstore.

    remove_book(bookname: str):
        Removes a book from the bookstore by its name.

    print_current_books():
        Prints the current list of books in the bookstore.

    search_for_book(bookname: str) -> list:
        Searches for a book by its name and returns a list of matching books.
    """

    def __init__(self):
        """Initializes an empty bookstore."""
        self.books = []

    def add_book(self, bookname: str, author: str, cost: float):
        """
        Adds a new book to the bookstore.

        Parameters:
        -----------
        bookname : str
            The name of the book.
        author : str
            The author of the book.
        cost : float
            The cost of the book.

        Returns:
        --------
        None
        """
        if not isinstance(cost, float):
            print("Value error: Cost must be a price i.e 9.99")
            return

        for book in self.books:
            if bookname == book[0]:
                print("Cannot add book. Book already exists")
                return
        else:
            self.books.append((bookname, author, cost))

    def remove_book(self, bookname: str):
        """
        Removes a book from the bookstore by its name.

        Parameters:
        -----------
        bookname : str
            The name of the book to be removed.

        Raises:
        -------
        ValueError
            If the book doesn't exist in the bookstore.
        """
        for book in self.books:
            if bookname == book[0]:
                self.books.remove(book)
                return
        raise ValueError("{} does not exist in the bookstore.".format(bookname))

    def print_current_books(self):
        """Prints the current list of books in the bookstore."""
        print("Books in Bookstore\n")
        for book in self.books:
            print("Bookname: {}\nAuthor: {}\n"
                  "Cost: {:.2f}\n".format(book[0], book[1], book[2]))

    def search_for_book(self, bookname: str) -> list:
        """
        Searches for a book by its name.

        Parameters:
        -----------
        bookname : str
            The name of the book to be searched.

        Returns:
        --------
        list
            A list of books that match the search.
        """
        books_found = []
        for book in self.books:
            if str(bookname).lower() in book[0].lower():
                books_found.append(book)
        return books_found

pydoc -w module_name

pydoc -w bookstore