将Python Flask app.py里的接口放在不同目录下的详细步骤

my_flask_app/ 
  │ 
  ├── app/ │ 
  ├──── __init__.py │ 
  ├──── main.py │ 
  └──── routes.py │ 
  ├── run.py │ 
  └── requirements.txt

from flask import Flask 
from .routes import main_blueprint 
def create_app(): 
    app = Flask(__name__) 
    app.register_blueprint(main_blueprint) 
    return app

from flask import Blueprint, jsonify 
main_blueprint = Blueprint('main', __name__) 
@main_blueprint.route('/') 
def home(): 
    return jsonify({'message': 'Hello, World!'}

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

from flask import Blueprint, jsonify 
user_blueprint = Blueprint('user', __name__) 
@user_blueprint.route('/user') 
def get_user(): 
    return jsonify({'username': 'example'})

from .routes import main_blueprint 
from .user import user_blueprint # 导入新的蓝图 
def create_app(): 
    app = Flask(__name__) 
    app.register_blueprint(main_blueprint) 
    app.register_blueprint(user_blueprint) # 注册新的蓝图 return app