mistral:7b

import re

def is_palindrome(s):
    s = re.sub('\\W+', '', s).lower()
    if s == s[::-1]:
        return True
    else:
        return False

class Book:

    def __init__(self, title, author, isbn, available=True):
        self.title = title
        self.author = author
        self.isbn = isbn
        self.available = available

    def __repr__(self):
        status = 'Available' if self.available else 'Checked out'
        return f'{self.title} by {self.author}, ISBN: {self.isbn}, Status: {status}'

class Library:

    def __init__(self):
        self.books = []

    def add_book(self, book):
        if book not in self.books:
            self.books.append(book)

    def checkout_book(self, isbn):
        for book in self.books:
            if book.isbn == isbn and book.available:
                book.available = False
                return True
        return False

    def return_book(self, isbn):
        for book in self.books:
            if book.isbn == isbn:
                book.available = True
                return True
        return False

    def find_by_author(self, author):
        results = [book for book in self.books if book.author == author]
        return results
library = Library()
book1 = Book('The Catcher in the Rye', 'J.D. Salinger', '978-0316769488', True)
book2 = Book('To Kill a Mockingbird'
... [truncated, 39 more chars]

def apply_discount(price, discount_percent):
    """
    Applies a percentage discount to a price.
    discount_percent is 0-100 (e.g., 20 means 20% off).
    Returns the discounted price, rounded to 2 decimal places.
    Raises ValueError if discount_percent is negative or greater than 100.
    Raises ValueError if price is negative.
    """
    if price < 0:
        raise ValueError('Price cannot be negative.')
    if discount_percent < 0 or discount_percent > 100:
        raise ValueError('Discount percentage must be between 0 and 100.')
    discount = price * (discount_percent / 100)
    new_price = round(price - discount, 2)
    return new_price