input: Write a function to generate a REST API with Python and Flask that allows users to create, read, update, and delete records from a database. The function should return the Flask app object.
  
  from flask import Flask, request
  from flask_sqlalchemy import SQLAlchemy
  
  def create_api():
      app = Flask(__name__)
      app.config['SQLALCHEMY_DATABASE_URI'] = 'sqlite:////tmp/test.db'
      db = SQLAlchemy(app)
  
      class Record(db.Model):
          id = db.Column(db.Integer, primary_key=True)
          name = db.Column(db.String(120), unique=True)
  
      db.create_all()
  
      @app.route('/records', methods=['GET'])
      def get_records():
          records = Record.query.all()
          return {'records': [record.name for record in records]}
  
      @app.route('/records', methods=['POST'])
      def create_record():
          record = Record(name=request.json['name'])
          db.session.add(record)
          db.session.commit()
          return {'id': record.id}
  
      @app.route('/records/<int:id>', methods=['PUT'])
      def update_record(id):
          record = Record.query.get(id)
          record.name = request.json['name']
          db.session.commit()
          return {'message': 'Record updated'}
  
      @app.route('/records/<int:id>', methods=['DELETE'])
      def delete_record(id):
          Record.query.filter_by(id=id).delete()
          db.session.commit()
          return {'message': 'Record deleted'}
  
      return app
  
  assert create_api() is not None
  assert create_api().config['SQLALCHEMY_DATABASE_URI'] == 'sqlite:////tmp/test.db'
  assert create_api().url_map.get('/records', 'GET') is not None
  assert create_api().url_map.get('/records', 'POST') is not None
  assert create_api().url_map.get('/records/<int:id>', 'PUT') is not None
  assert create_api().url_map.get('/records/<int:id>', 'DELETE') is not None
  
output: 
  def create_api():
      app = Flask(__name__)
      app.config['SQLALCHEMY_DATABASE_URI'] = 'sqlite:////tmp/test.db'
      db = SQLAlchemy(app)
  
      class Record(db.Model):
          id = db.Column(db.Integer, primary_key=True)
          name = db.Column(db.String(120), unique=True)
  
      db.create_all()
  
      @app.route('/records', methods=['GET'])
      def get_records():
          records = Record.query.all()
          return {'records': [record.name for record in records]}
  
      @app.route('/records', methods=['POST'])
      def create_record():
          record = Record(name=request.json['name'])
          db.session.add(record)
          db.session.commit()
          return {'id': record.id}
  
      @app.route('/records/<int:id>', methods=['PUT'])
      def update_record(id):
          record = Record.query.get(id)
          record.name = request.json['name']
          db.session.commit()
          return {'message': 'Record updated'}
  
      @app.route('/records/<int:id>', methods=['DELETE'])
      def delete_record(id):
          Record.query.filter_by(id=id).delete()
          db.session.commit()
          return {'message': 'Record deleted'}
  
      return app
  