python - 导入错误 : attempted relative import with no known parent package in flask

Question

文件夹结构

.
├── myapp
│   ├── api
│   │   └── routes.py
│   ├── app.py
│   |
│   └── site
│       └── routes.py

app.py 在 api 文件夹和 site 文件夹之外的 myapp 文件夹中

api/routes.py

from flask import Blueprint
api = Blueprint('api',__name__,url_prefix='api')

@api.route('/userlist/')
def user():
  return { 1: 'user1', 2:'user2'}

网站/routes.py

from flask import Blueprint

site = Blueprint('site',__name__)

@site.route('/')
def index():
  return 'Welcome to the Home page'

应用.py

from flask import Flask
from .site.routes import site
from .api.routes import api

def create_app():
  app = Flask(__name__)
  app.register_blueprint(api)
  app.register_blueprint(site)
  return app

我在终端中使用“flask run”命令运行 flask 应用程序时遇到此错误

Traceback (most recent call last):
 File "app.py", line 2, in <module>
  from .site.routes import site
ImportError: attempted relative import with no known parent package

我不知道如何解决这个问题。提前致谢:)

Answer 1

请在每个文件夹中添加空的__init__.py:我的应用程序、API、站点

然后尝试导入从 myapp.site.routes 导入站点