input: Write a function to create an API using Flask and SQLAlchemy that allows users to perform CRUD operations on a database. The API should support creating, reading, updating, and deleting records. If successful, return a JSON response with the appropriate message. If the given input is not valid, return a JSON response with an error message.
  assert create_api()=="""from flask import Flask, request
  from flask_sqlalchemy import SQLAlchemy
  
  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'}
  
  if name == 'main':
   app.run(debug=True)"""
  assert create_api()==None
  assert create_api()==False
output: 
  def create_api():
      from flask import Flask, request
      from flask_sqlalchemy import SQLAlchemy
  
      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'}
  
      if __name__ == '__main__':
          app.run(debug=True)
  