在\uu init\uuy.py中创建蓝图

Question

我有以下应用程序结构

/application
  app.py
  /decorators
    queryAccessory.py
  /auth
    __init__.py
    dao.py
    /controllers
      login.py
      register.py
    /models
      user.py
      get_user_response.py
  /tests
    __init__.py
    dao.py
    /controllers
      get_tests.py
    /models
      test.py
      get_tests_response.py

蓝图在auth和tests包的init.py文件中声明。在

^{pr2}$

在测试中/init.py as

from flask import Blueprint, request

tayyariTests = Blueprint('tayyariTests', __name__)
from tests.controllers import get_tests

两份蓝图都登记在应用程序副本. 问题是当init.py文件的末尾都有导入时，应用程序不会启动。 如果我从任何1个文件中删除最后的导入行，应用程序就会启动，注册的蓝图就可以正常工作了。但是，当导入同时存在于init.py文件时，我会得到以下错误

  File "app.py", line 8, in <module>
    from auth import tayyariAuth
  File "/Users/anuragjoshi/Work/Tayyari/tayyari/tayyari-rest/auth/__init__.py", line 5, in <module>
    from auth.controllers import register 
  File "/Users/anuragjoshi/Work/Tayyari/tayyari/tayyari-rest/auth/controllers/register.py", line 1, in <module>
    from auth import tayyariAuth, dao
  File "/Users/anuragjoshi/Work/Tayyari/tayyari/tayyari-rest/auth/dao.py", line 1, in <module>
    from decorators.queryAccessor import Query
  File "/Users/anuragjoshi/Work/Tayyari/tayyari/tayyari-rest/decorators/queryAccessor.py", line 1, in <module>
    from app import session
  File "/Users/anuragjoshi/Work/Tayyari/tayyari/tayyari-rest/app.py", line 9, in <module>
    from tests import tayyariTests
  File "/Users/anuragjoshi/Work/Tayyari/tayyari/tayyari-rest/tests/__init__.py", line 5, in <module>
    from tests.controllers import get_tests
  File "/Users/anuragjoshi/Work/Tayyari/tayyari/tayyari-rest/tests/controllers/get_tests.py", line 1, in <module>
    from tests import tayyariTests, request, dao, TayyariEncoder
  File "/Users/anuragjoshi/Work/Tayyari/tayyari/tayyari-rest/tests/dao.py", line 1, in <module>
    from decorators.queryAccessor import Query
ImportError: cannot import name 'Query' from 'decorators.queryAccessor' (/Users/anuragjoshi/Work/Tayyari/tayyari/tayyari-rest/decorators/queryAccessor.py)

请帮助我了解这里发生了什么，以及如何避免这种情况。在

提前谢谢。在

Answer 1

似乎模块decorators.queryAccessor不在python路径中。 你怎么把这些蓝图引进来的？我通常有一个工厂方法来创建应用程序。在这种方法中，我有如下导入来避免循环引用：

def create_app():
    # Your code here
    ...
    from auth import tayyariAuth
    app.register_blueprint(tayyariAuth)
    from tests import tayyariTests
    app.register_blueprint(tayyariTests)