flask.txt

from flask import Flask, request, jsonify

app = Flask(__name__)

# Sample data
books = [
    {"id": 1, "title": "Book 1", "author": "Author 1"},
    {"id": 2, "title": "Book 2", "author": "Author 2"},
    {"id": 3, "title": "Book 3", "author": "Author 3"}
]

# Route to get all books
@app.route('/books', methods=['GET'])
def get_books():
    return jsonify(books)

# Route to get a specific book by its ID
@app.route('/books/<int:book_id>', methods=['GET'])
def get_book(book_id):
    for book in books:
        if book['id'] == book_id:
            return jsonify(book)
    return jsonify({'error': 'Book not found'}), 404

# Route to add a new book
@app.route('/books', methods=['POST'])
def add_book():
    new_book = request.json
    books.append(new_book)
    return jsonify(new_book), 201

# Route to update an existing book
@app.route('/books/<int:book_id>', methods=['PUT'])
def update_book(book_id):
    for book in books:
        if book['id'] == book_id:
            book.update(request.json)
            return jsonify(book)
    return jsonify({'error': 'Book not found'}), 404

# Route to delete a book
@app.route('/books/<int:book_id>', methods=['DELETE'])
def delete_book(book_id):
    for i, book in enumerate(books):
        if book['id'] == book_id:
            del books[i]
            return jsonify({'message': 'Book deleted'})
    return jsonify({'error': 'Book not found'}), 404

if __name__ == '__main__':
    app.run(debug=True)