input: 
  def create_blog_post_crud_api() -> Flask:
      """
      Creates a basic CRUD API for the BlogPost model using Python/Flask. 
      The API includes endpoints for creating a post, getting all posts, 
      getting a single post, editing a post, and deleting a post.
      
      >>> app = create_blog_post_crud_api()
      >>> # Assuming the following requests are made in sequence:
      >>> # POST /post with JSON data: {"title": "First Post", "content": "Content of the first post"}
      >>> # POST /post with JSON data: {"title": "Second Post", "content": "Content of the second post"}
      >>> # GET /posts
      >>> # GET /post/1
      >>> # PUT /post/1 with JSON data: {"title": "Updated First Post", "content": "Updated content"}
      >>> # DELETE /post/1
      >>> # GET /posts
      >>> app.run(debug=True)
      """
      
      from flask import Flask, jsonify, request
      from flask_sqlalchemy import SQLAlchemy
  
      app = Flask(__name__)
      app.config['SQLALCHEMY_DATABASE_URI'] =  'sqlite:///test.db'
      db = SQLAlchemy(app)
  
      class BlogPost(db.Model):
          id = db.Column(db.Integer, primary_key=True)
          title = db.Column(db.String(200))
          content = db.Column(db.Text)
  
          def serialize(self):
              return {
                  'id': self.id,
                  'title': self.title,
                  'content': self.content
              }
  
          def __repr__(self):
              return '<BlogPost %r>' % self.title
  
      @app.route('/post', methods=['POST'])
      def create_post():
          data = request.get_json()
          post = BlogPost(title=data['title'], content=data['content'])
          db.session.add(post)
          db.session.commit()
          return jsonify(post.serialize())
  
      @app.route('/posts', methods=['GET'])
      def get_posts():
          posts = BlogPost.query.all()
          return jsonify([post.serialize() for post in posts])
  
      @app.route('/post/<int:id>', methods=['GET'])
      def get_post(id):
          post = BlogPost.query.filter_by(id=id).first()
          if post:
              return jsonify(post.serialize())
          else:
              return jsonify({'message': 'Post not found'}), 404
  
      @app.route('/post/<int:id>', methods=['PUT'])
      def edit_post(id):
          data = request.get_json()
          post = BlogPost.query.filter_by(id=id).first()
          if post:
              post.title = data['title']
              post.content = data['content']
              db.session.commit()
              return jsonify(post.serialize())
          else:
              return jsonify({'message': 'Post not found'}), 404
  
      @app.route('/post/<int:id>', methods=['DELETE'])
      def delete_post(id):
          post = BlogPost.query.filter_by(id=id).first()
          if post:
              db.session.delete(post)
              db.session.commit()
              return jsonify({'message': 'Post deleted'})
          else:
              return jsonify({'message': 'Post not found'}), 404
  
      return app
  
output:     db.create_all()