what's wrong with the code?

from flask import Flask


app = Flask(__name__)


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

from flask.ext.restful import Resource
from flask import Blueprint
from flask.ext.restful import Api
import models


class IngredientList(Resource):
    def get(self):
        return 'IngredientList'


class Ingredient(Resource):
    def get(self, id):
        return 'Ingredient'

ingredients_api = Blueprint('resources.ingredients',__name__)
api = Api(ingredients_api)
recipes_api = Blueprint('ingredients.recipes',__name__)   
api = Api(ingredients_api)
api.add_resources(
    IngredientList,
    '/api/v1/ingredients',
    endpoint = 'ingredients'
  )
api.add_resources(
    Ingredient,
    '/api/v1/ingredients/<int:id>',
    endpoint = 'ingredient'
  )

from flask.ext.restful import Resource
from flask import Blueprint
from flask.ext.restful import Api
import models


class RecipeList(Resource):
    def get(self):
        return 'RecipeList'


class Recipe(Resource):
    def get(self, id):
        return 'Recipe'

recipes_api = Blueprint('resources.recipes',__name__)   
api = Api(recipes_api)
api.add_resources(
    RecipeList,
    '/api/v1/recipes',
    endpoint = 'recipes'
  )
api.add_resources(
    Recipe,
    '/api/v1/recipes/<int:id>',
    endpoint = 'recipe'
  )